Linux Basics

Biostat 203B

Author

Dr. Hua Zhou @ UCLA

Published

December 27, 2023

Display machine information for reproducibility:

sessionInfo()
R version 4.3.2 (2023-10-31)
Platform: aarch64-apple-darwin20 (64-bit)
Running under: macOS Sonoma 14.2.1

Matrix products: default
BLAS:   /Library/Frameworks/R.framework/Versions/4.3-arm64/Resources/lib/libRblas.0.dylib 
LAPACK: /Library/Frameworks/R.framework/Versions/4.3-arm64/Resources/lib/libRlapack.dylib;  LAPACK version 3.11.0

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

time zone: America/Los_Angeles
tzcode source: internal

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

loaded via a namespace (and not attached):
 [1] htmlwidgets_1.6.2 compiler_4.3.2    fastmap_1.1.1     cli_3.6.1        
 [5] tools_4.3.2       htmltools_0.5.6   rstudioapi_0.15.0 yaml_2.3.7       
 [9] rmarkdown_2.25    knitr_1.44        jsonlite_1.8.7    xfun_0.40        
[13] digest_0.6.33     rlang_1.1.1       evaluate_0.21    

1 Preface

  • This html is rendered from linux.qmd on Linux Ubuntu 22.04 (jammy).
    • Mac users can render linux.qmd directly. Some tools such as tree and locate need to be installed (follow the error messages).

    • Windows users need to install WSL (Windows Subsystem for Linux) to render linux.qmd using Ubuntu. Some tools such as tree and locate need to be installed (follow the error messages).

    • Both Mac and Windows users can also use Docker to render linux.qmd within a Ubuntu container.

  • In this lecture, most code chunks are bash commands instead of R code.

2 Why Linux

Linux is the most common platform for scientific computing and deployment of data science tools.

  • Open source and community support.

  • Things break; when they break using Linux, it’s easy to fix.

  • Scalability: portable devices (Android, iOS), laptops, servers, clusters, and super computers.

    • E.g. UCLA Hoffmann2 cluster runs on Linux; most machines in cloud (AWS, Azure, GCP) run on Linux.
  • Cost: it’s free!

3 Distributions of Linux

  • Debian/Ubuntu is a popular choice for personal computers.

  • RHEL/CentOS is popular on servers. (In December 2020, Red Hat terminated the development of CentOS Linux distribution.)

  • UCLA Hoffman2 cluster runs CentOS 7.9.2009 (as of 2023-01-01).

  • MacOS was originally derived from Unix/Linux (Darwin kernel). It is POSIX compliant. Most shell commands we review here apply to MacOS terminal as well. Windows/DOS, unfortunately, is a totally different breed.

  • Show operating system (OS) type:

echo $OSTYPE
darwin23
  • Show distribution/version on Linux:
# only on Linux terminal
cat /etc/*-release
  • Show distribution/version on MacOS:
# only on Mac terminal
sw_vers -productVersion
14.2.1

or

# only on Mac terminal
system_profiler SPSoftwareDataType
Software:

    System Software Overview:

      System Version: macOS 14.2.1 (23C71)
      Kernel Version: Darwin 23.2.0
      Boot Volume: Macintosh HD
      Boot Mode: Normal
      Computer Name: FSPH-HZHOU
      User Name: Hua Zhou (huazhou)
      Secure Virtual Memory: Enabled
      System Integrity Protection: Enabled
      Time since boot: 4 days, 2 hours, 52 minutes

4 Linux shells

4.1 Shells

  • A shell translates commands to OS instructions.

  • Most commonly used shells include bash, csh, tcsh, zsh, etc.

  • The default shell in MacOS changed from bash to zsh since MacOS v10.15.

  • Sometimes a command and a script does not run simply because it’s written for another shell.

  • We mostly use bash shell commands in this class.

  • Determine the current shell:

echo $SHELL
/bin/zsh
  • List available shells:
cat /etc/shells
# List of acceptable shells for chpass(1).
# Ftpd will not allow users to connect who are not using
# one of these shells.

/bin/bash
/bin/csh
/bin/dash
/bin/ksh
/bin/sh
/bin/tcsh
/bin/zsh
  • Change to another shell:
```{bash}
#| eval: false
exec bash -l
```

The -l option indicates it should be a login shell.

  • Change your login shell permanently:
chsh -s /bin/bash [USERNAME]

Then log out and log in.

4.2 Command history and bash completion

We can navigate to previous/next commands by the upper and lower keys, or maintain a command history stack using pushd and popd commands.

Bash provides the following standard completion for the Linux users by default. Much less typing errors and time!

  • Pathname completion.

  • Filename completion.

  • Variablename completion: echo $[TAB][TAB].

  • Username completion: cd ~[TAB][TAB].

  • Hostname completion ssh huazhou@[TAB][TAB].

  • It can also be customized to auto-complete other stuff such as options and command’s arguments. Google bash completion for more information.

4.3 man is man’s best friend

Online help for shell commands: man [COMMANDNAME].

# display the first 30 lines of documentation for the ls command
man ls | head -30
LS(1)                       General Commands Manual                      LS(1)

NNAAMMEE
     llss – list directory contents

SSYYNNOOPPSSIISS
     llss [--@@AABBCCFFGGHHIILLOOPPRRSSTTUUWWaabbccddeeffgghhiikkllmmnnooppqqrrssttuuvvwwxxyy11%%,,] [----ccoolloorr=_w_h_e_n]
        [--DD _f_o_r_m_a_t] [_f_i_l_e _._._.]

DDEESSCCRRIIPPTTIIOONN
     For each operand that names a _f_i_l_e of a type other than directory, llss
     displays its name as well as any requested, associated information.  For
     each operand that names a _f_i_l_e of type directory, llss displays the names
     of files contained within that directory, as well as any requested,
     associated information.

     If no operands are given, the contents of the current directory are
     displayed.  If more than one operand is given, non-directory operands are
     displayed first; directory and non-directory operands are sorted
     separately and in lexicographical order.

     The following options are available:

     --@@      Display extended attribute keys and sizes in long (--ll) output.

     --AA      Include directory entries whose names begin with a dot (‘_.’)
             except for _. and _._..  Automatically set for the super-user unless
             --II is specified.

     --BB      Force printing of non-printable characters (as defined by

6 Work with text files

6.1 View/peek text files

  • cat prints the contents of a file:
cat runSim.R
## parsing command arguments
for (arg in commandArgs(TRUE)) {
  eval(parse(text=arg))
}

## check if a given integer is prime
isPrime = function(n) {
  if (n <= 3) {
    return (TRUE)
  }
  if (any((n %% 2:floor(sqrt(n))) == 0)) {
    return (FALSE)
  }
  return (TRUE)
}

## estimate mean only using observation with prime indices
estMeanPrimes = function (x) {
  n = length(x)
  ind = sapply(1:n, isPrime)
  return (mean(x[ind]))
}

# simulate data
x = rnorm(n)

# estimate mean
estMeanPrimes(x)
  • head prints the first 10 lines of a file:
head runSim.R
## parsing command arguments
for (arg in commandArgs(TRUE)) {
  eval(parse(text=arg))
}

## check if a given integer is prime
isPrime = function(n) {
  if (n <= 3) {
    return (TRUE)
  }

head -l prints the first \(l\) lines of a file:

head -15 runSim.R
## parsing command arguments
for (arg in commandArgs(TRUE)) {
  eval(parse(text=arg))
}

## check if a given integer is prime
isPrime = function(n) {
  if (n <= 3) {
    return (TRUE)
  }
  if (any((n %% 2:floor(sqrt(n))) == 0)) {
    return (FALSE)
  }
  return (TRUE)
}
  • tail prints the last 10 lines of a file:
tail runSim.R
  n = length(x)
  ind = sapply(1:n, isPrime)
  return (mean(x[ind]))
}

# simulate data
x = rnorm(n)

# estimate mean
estMeanPrimes(x)

tail -l prints the last \(l\) lines of a file:

tail -15 runSim.R
  return (TRUE)
}

## estimate mean only using observation with prime indices
estMeanPrimes = function (x) {
  n = length(x)
  ind = sapply(1:n, isPrime)
  return (mean(x[ind]))
}

# simulate data
x = rnorm(n)

# estimate mean
estMeanPrimes(x)
  • Questions:
    • How to see the 11th line of the file and nothing else?
    • What about the 11th to the last line?

6.2 Piping and redirection

  • | sends output from one command as input of another command.
ls -l | head -5
total 14904
-rw-r--r--  1 huazhou  staff   110345 Mar 10  2023 Emacs_Reference_Card.pdf
-rw-r--r--  1 huazhou  staff   157353 Mar 10  2023 IDRE_Winter_2019_Workshops.pdf
-rw-r--r--  1 huazhou  staff   141962 Mar 10  2023 Richard_Stallman_2013.png
-rw-r--r--  1 huazhou  staff   199492 Mar 10  2023 Vi_Cheat_Sheet.pdf
  • > directs output from one command to a file.

  • >> appends output from one command to a file.

  • < reads input from a file.

  • Combinations of shell commands (grep, sed, awk, …), piping and redirection, and regular expressions allow us pre-process and reformat huge text files efficiently.

  • See HW1.

6.3 less is more; more is less

  • more browses a text file screen by screen (only downwards). Scroll down one page (paging) by pressing the spacebar; exit by pressing the q key.

  • less is also a pager, but has more functionalities, e.g., scroll upwards and downwards through the input.

  • less doesn’t need to read the whole file, i.e., it loads files faster than more.

6.4 grep

grep prints lines that match an expression:

  • Show lines that contain string CentOS:
# quotes not necessary if not a regular expression
grep 'CentOS' linux.qmd
- RHEL/CentOS is popular on servers. (In December 2020, Red Hat terminated the development of CentOS Linux distribution.)
- UCLA Hoffman2 cluster runs CentOS 7.9.2009 (as of 2023-01-01).
- Show lines that contain string `CentOS`:
grep 'CentOS' linux.qmd
grep 'CentOS' *.qmd
grep -n 'CentOS' linux.qmd
- Replace `CentOS` by `RHEL` in a text file:
sed 's/CentOS/RHEL/' linux.qmd | grep RHEL
  • Search multiple text files:
grep 'CentOS' *.qmd
- RHEL/CentOS is popular on servers. (In December 2020, Red Hat terminated the development of CentOS Linux distribution.)
- UCLA Hoffman2 cluster runs CentOS 7.9.2009 (as of 2023-01-01).
- Show lines that contain string `CentOS`:
grep 'CentOS' linux.qmd
grep 'CentOS' *.qmd
grep -n 'CentOS' linux.qmd
- Replace `CentOS` by `RHEL` in a text file:
sed 's/CentOS/RHEL/' linux.qmd | grep RHEL
  • Show matching line numbers:
grep -n 'CentOS' linux.qmd
49:- RHEL/CentOS is popular on servers. (In December 2020, Red Hat terminated the development of CentOS Linux distribution.)
55:- UCLA Hoffman2 cluster runs CentOS 7.9.2009 (as of 2023-01-01).
351:- Show lines that contain string `CentOS`:
354:grep 'CentOS' linux.qmd
359:grep 'CentOS' *.qmd
364:grep -n 'CentOS' linux.qmd
381:- Replace `CentOS` by `RHEL` in a text file:
383:sed 's/CentOS/RHEL/' linux.qmd | grep RHEL
  • Find all files in current directory with .png extension:
ls | grep '.png$'
Richard_Stallman_2013.png
key_authentication_1.png
key_authentication_2.png
linux_directory_structure.png
linux_filepermission.png
linux_filepermission_oct.png
redhat_kills_centos.png
screenshot_top.png
  • Find all directories in the current directory:
ls -al | grep '^d'
drwxr-xr-x  20 huazhou  staff      640 Dec 27 13:50 .
drwxr-xr-x  23 huazhou  staff      736 Mar 10  2023 ..

6.5 sed

  • sed is a stream editor.

  • Replace CentOS by RHEL in a text file:

sed 's/CentOS/RHEL/' linux.qmd | grep RHEL
- RHEL/RHEL is popular on servers. (In December 2020, Red Hat terminated the development of CentOS Linux distribution.)
- UCLA Hoffman2 cluster runs RHEL 7.9.2009 (as of 2023-01-01).
- Show lines that contain string `RHEL`:
grep 'RHEL' linux.qmd
grep 'RHEL' *.qmd
grep -n 'RHEL' linux.qmd
- Replace `RHEL` by `RHEL` in a text file:
sed 's/RHEL/RHEL/' linux.qmd | grep RHEL

6.6 awk

  • awk is a filter and report writer.

  • First let’s display the content of the file /etc/passwd:

cat /etc/passwd
##
# User Database
# 
# Note that this file is consulted directly only when the system is running
# in single-user mode.  At other times this information is provided by
# Open Directory.
#
# See the opendirectoryd(8) man page for additional information about
# Open Directory.
##
nobody:*:-2:-2:Unprivileged User:/var/empty:/usr/bin/false
root:*:0:0:System Administrator:/var/root:/bin/sh
daemon:*:1:1:System Services:/var/root:/usr/bin/false
_uucp:*:4:4:Unix to Unix Copy Protocol:/var/spool/uucp:/usr/sbin/uucico
_taskgated:*:13:13:Task Gate Daemon:/var/empty:/usr/bin/false
_networkd:*:24:24:Network Services:/var/networkd:/usr/bin/false
_installassistant:*:25:25:Install Assistant:/var/empty:/usr/bin/false
_lp:*:26:26:Printing Services:/var/spool/cups:/usr/bin/false
_postfix:*:27:27:Postfix Mail Server:/var/spool/postfix:/usr/bin/false
_scsd:*:31:31:Service Configuration Service:/var/empty:/usr/bin/false
_ces:*:32:32:Certificate Enrollment Service:/var/empty:/usr/bin/false
_appstore:*:33:33:Mac App Store Service:/var/db/appstore:/usr/bin/false
_mcxalr:*:54:54:MCX AppLaunch:/var/empty:/usr/bin/false
_appleevents:*:55:55:AppleEvents Daemon:/var/empty:/usr/bin/false
_geod:*:56:56:Geo Services Daemon:/var/db/geod:/usr/bin/false
_devdocs:*:59:59:Developer Documentation:/var/empty:/usr/bin/false
_sandbox:*:60:60:Seatbelt:/var/empty:/usr/bin/false
_mdnsresponder:*:65:65:mDNSResponder:/var/empty:/usr/bin/false
_ard:*:67:67:Apple Remote Desktop:/var/empty:/usr/bin/false
_www:*:70:70:World Wide Web Server:/Library/WebServer:/usr/bin/false
_eppc:*:71:71:Apple Events User:/var/empty:/usr/bin/false
_cvs:*:72:72:CVS Server:/var/empty:/usr/bin/false
_svn:*:73:73:SVN Server:/var/empty:/usr/bin/false
_mysql:*:74:74:MySQL Server:/var/empty:/usr/bin/false
_sshd:*:75:75:sshd Privilege separation:/var/empty:/usr/bin/false
_qtss:*:76:76:QuickTime Streaming Server:/var/empty:/usr/bin/false
_cyrus:*:77:6:Cyrus Administrator:/var/imap:/usr/bin/false
_mailman:*:78:78:Mailman List Server:/var/empty:/usr/bin/false
_appserver:*:79:79:Application Server:/var/empty:/usr/bin/false
_clamav:*:82:82:ClamAV Daemon:/var/virusmails:/usr/bin/false
_amavisd:*:83:83:AMaViS Daemon:/var/virusmails:/usr/bin/false
_jabber:*:84:84:Jabber XMPP Server:/var/empty:/usr/bin/false
_appowner:*:87:87:Application Owner:/var/empty:/usr/bin/false
_windowserver:*:88:88:WindowServer:/var/empty:/usr/bin/false
_spotlight:*:89:89:Spotlight:/var/empty:/usr/bin/false
_tokend:*:91:91:Token Daemon:/var/empty:/usr/bin/false
_securityagent:*:92:92:SecurityAgent:/var/db/securityagent:/usr/bin/false
_calendar:*:93:93:Calendar:/var/empty:/usr/bin/false
_teamsserver:*:94:94:TeamsServer:/var/teamsserver:/usr/bin/false
_update_sharing:*:95:-2:Update Sharing:/var/empty:/usr/bin/false
_installer:*:96:-2:Installer:/var/empty:/usr/bin/false
_atsserver:*:97:97:ATS Server:/var/empty:/usr/bin/false
_ftp:*:98:-2:FTP Daemon:/var/empty:/usr/bin/false
_unknown:*:99:99:Unknown User:/var/empty:/usr/bin/false
_softwareupdate:*:200:200:Software Update Service:/var/db/softwareupdate:/usr/bin/false
_coreaudiod:*:202:202:Core Audio Daemon:/var/empty:/usr/bin/false
_screensaver:*:203:203:Screensaver:/var/empty:/usr/bin/false
_locationd:*:205:205:Location Daemon:/var/db/locationd:/usr/bin/false
_trustevaluationagent:*:208:208:Trust Evaluation Agent:/var/empty:/usr/bin/false
_timezone:*:210:210:AutoTimeZoneDaemon:/var/empty:/usr/bin/false
_lda:*:211:211:Local Delivery Agent:/var/empty:/usr/bin/false
_cvmsroot:*:212:212:CVMS Root:/var/empty:/usr/bin/false
_usbmuxd:*:213:213:iPhone OS Device Helper:/var/db/lockdown:/usr/bin/false
_dovecot:*:214:6:Dovecot Administrator:/var/empty:/usr/bin/false
_dpaudio:*:215:215:DP Audio:/var/empty:/usr/bin/false
_postgres:*:216:216:PostgreSQL Server:/var/empty:/usr/bin/false
_krbtgt:*:217:-2:Kerberos Ticket Granting Ticket:/var/empty:/usr/bin/false
_kadmin_admin:*:218:-2:Kerberos Admin Service:/var/empty:/usr/bin/false
_kadmin_changepw:*:219:-2:Kerberos Change Password Service:/var/empty:/usr/bin/false
_devicemgr:*:220:220:Device Management Server:/var/empty:/usr/bin/false
_webauthserver:*:221:221:Web Auth Server:/var/empty:/usr/bin/false
_netbios:*:222:222:NetBIOS:/var/empty:/usr/bin/false
_warmd:*:224:224:Warm Daemon:/var/empty:/usr/bin/false
_dovenull:*:227:227:Dovecot Authentication:/var/empty:/usr/bin/false
_netstatistics:*:228:228:Network Statistics Daemon:/var/empty:/usr/bin/false
_avbdeviced:*:229:-2:Ethernet AVB Device Daemon:/var/empty:/usr/bin/false
_krb_krbtgt:*:230:-2:Open Directory Kerberos Ticket Granting Ticket:/var/empty:/usr/bin/false
_krb_kadmin:*:231:-2:Open Directory Kerberos Admin Service:/var/empty:/usr/bin/false
_krb_changepw:*:232:-2:Open Directory Kerberos Change Password Service:/var/empty:/usr/bin/false
_krb_kerberos:*:233:-2:Open Directory Kerberos:/var/empty:/usr/bin/false
_krb_anonymous:*:234:-2:Open Directory Kerberos Anonymous:/var/empty:/usr/bin/false
_assetcache:*:235:235:Asset Cache Service:/var/empty:/usr/bin/false
_coremediaiod:*:236:236:Core Media IO Daemon:/var/empty:/usr/bin/false
_launchservicesd:*:239:239:_launchservicesd:/var/empty:/usr/bin/false
_iconservices:*:240:240:IconServices:/var/empty:/usr/bin/false
_distnote:*:241:241:DistNote:/var/empty:/usr/bin/false
_nsurlsessiond:*:242:242:NSURLSession Daemon:/var/db/nsurlsessiond:/usr/bin/false
_displaypolicyd:*:244:244:Display Policy Daemon:/var/empty:/usr/bin/false
_astris:*:245:245:Astris Services:/var/db/astris:/usr/bin/false
_krbfast:*:246:-2:Kerberos FAST Account:/var/empty:/usr/bin/false
_gamecontrollerd:*:247:247:Game Controller Daemon:/var/empty:/usr/bin/false
_mbsetupuser:*:248:248:Setup User:/var/setup:/bin/bash
_ondemand:*:249:249:On Demand Resource Daemon:/var/db/ondemand:/usr/bin/false
_xserverdocs:*:251:251:macOS Server Documents Service:/var/empty:/usr/bin/false
_wwwproxy:*:252:252:WWW Proxy:/var/empty:/usr/bin/false
_mobileasset:*:253:253:MobileAsset User:/var/ma:/usr/bin/false
_findmydevice:*:254:254:Find My Device Daemon:/var/db/findmydevice:/usr/bin/false
_datadetectors:*:257:257:DataDetectors:/var/db/datadetectors:/usr/bin/false
_captiveagent:*:258:258:captiveagent:/var/empty:/usr/bin/false
_ctkd:*:259:259:ctkd Account:/var/empty:/usr/bin/false
_applepay:*:260:260:applepay Account:/var/db/applepay:/usr/bin/false
_hidd:*:261:261:HID Service User:/var/db/hidd:/usr/bin/false
_cmiodalassistants:*:262:262:CoreMedia IO Assistants User:/var/db/cmiodalassistants:/usr/bin/false
_analyticsd:*:263:263:Analytics Daemon:/var/db/analyticsd:/usr/bin/false
_fpsd:*:265:265:FPS Daemon:/var/db/fpsd:/usr/bin/false
_timed:*:266:266:Time Sync Daemon:/var/db/timed:/usr/bin/false
_nearbyd:*:268:268:Proximity and Ranging Daemon:/var/db/nearbyd:/usr/bin/false
_reportmemoryexception:*:269:269:ReportMemoryException:/var/db/reportmemoryexception:/usr/bin/false
_driverkit:*:270:270:DriverKit:/var/empty:/usr/bin/false
_diskimagesiod:*:271:271:DiskImages IO Daemon:/var/db/diskimagesiod:/usr/bin/false
_logd:*:272:272:Log Daemon:/var/db/diagnostics:/usr/bin/false
_appinstalld:*:273:273:App Install Daemon:/var/db/appinstalld:/usr/bin/false
_installcoordinationd:*:274:274:Install Coordination Daemon:/var/db/installcoordinationd:/usr/bin/false
_demod:*:275:275:Demo Daemon:/var/empty:/usr/bin/false
_rmd:*:277:277:Remote Management Daemon:/var/db/rmd:/usr/bin/false
_accessoryupdater:*:278:278:Accessory Update Daemon:/var/db/accessoryupdater:/usr/bin/false
_knowledgegraphd:*:279:279:Knowledge Graph Daemon:/var/db/knowledgegraphd:/usr/bin/false
_coreml:*:280:280:CoreML Services:/var/db/coreml:/usr/bin/false
_sntpd:*:281:281:SNTP Server Daemon:/var/empty:/usr/bin/false
_trustd:*:282:282:trustd:/var/empty:/usr/bin/false
_mmaintenanced:*:283:283:mmaintenanced:/var/db/mmaintenanced:/usr/bin/false
_darwindaemon:*:284:284:Darwin Daemon:/var/db/darwindaemon:/usr/bin/false
_notification_proxy:*:285:285:Notification Proxy:/var/empty:/usr/bin/false
_avphidbridge:*:288:288:Apple Virtual Platform HID Bridge:/var/empty:/usr/bin/false
_biome:*:289:289:Biome:/var/db/biome:/usr/bin/false
_backgroundassets:*:291:291:Background Assets Service:/var/empty:/usr/bin/false
_mobilegestalthelper:*:293:293:MobileGestaltHelper:/var/empty:/usr/bin/false
_audiomxd:*:294:294:Audio and MediaExperience Daemon:/var/db/audiomxd:/usr/bin/false
_terminusd:*:295:295:Terminus:/var/empty:/usr/bin/false
_neuralengine:*:296:296:AppleNeuralEngine:/var/db/neuralengine:/usr/bin/false
_oahd:*:441:441:OAH Daemon:/var/empty:/usr/bin/false

Each line contains fields (1) user name, (2) password, (3) user ID, (4) group ID, (5) user ID info, (6) home directory, and (7) command shell, separated by :.

  • Print sorted list of login names:
awk -F: '{ print $1 }' /etc/passwd | sort | head -10
#
# 
# Note that this file is consulted directly only when the system is running
# Open Directory.
# Open Directory.
# See the opendirectoryd(8) man page for additional information about
# User Database
# in single-user mode.  At other times this information is provided by
##
##
  • Print number of lines in a file, as NR stands for Number of Rows:
awk 'END { print NR }' /etc/passwd
131

or

wc -l /etc/passwd
     131 /etc/passwd

or (not displaying file name)

wc -l < /etc/passwd
     131
  • Print login names with UID in range 1000-1035:
awk -F: '{if ($3 >= 1000 && $3 <= 1047) print}' /etc/passwd
  • Print login names and log-in shells in comma-separated format:
awk -F: '{OFS = ","} {print $1, $7}' /etc/passwd
##,
# User Database,
# ,
# Note that this file is consulted directly only when the system is running,
# in single-user mode.  At other times this information is provided by,
# Open Directory.,
#,
# See the opendirectoryd(8) man page for additional information about,
# Open Directory.,
##,
nobody,/usr/bin/false
root,/bin/sh
daemon,/usr/bin/false
_uucp,/usr/sbin/uucico
_taskgated,/usr/bin/false
_networkd,/usr/bin/false
_installassistant,/usr/bin/false
_lp,/usr/bin/false
_postfix,/usr/bin/false
_scsd,/usr/bin/false
_ces,/usr/bin/false
_appstore,/usr/bin/false
_mcxalr,/usr/bin/false
_appleevents,/usr/bin/false
_geod,/usr/bin/false
_devdocs,/usr/bin/false
_sandbox,/usr/bin/false
_mdnsresponder,/usr/bin/false
_ard,/usr/bin/false
_www,/usr/bin/false
_eppc,/usr/bin/false
_cvs,/usr/bin/false
_svn,/usr/bin/false
_mysql,/usr/bin/false
_sshd,/usr/bin/false
_qtss,/usr/bin/false
_cyrus,/usr/bin/false
_mailman,/usr/bin/false
_appserver,/usr/bin/false
_clamav,/usr/bin/false
_amavisd,/usr/bin/false
_jabber,/usr/bin/false
_appowner,/usr/bin/false
_windowserver,/usr/bin/false
_spotlight,/usr/bin/false
_tokend,/usr/bin/false
_securityagent,/usr/bin/false
_calendar,/usr/bin/false
_teamsserver,/usr/bin/false
_update_sharing,/usr/bin/false
_installer,/usr/bin/false
_atsserver,/usr/bin/false
_ftp,/usr/bin/false
_unknown,/usr/bin/false
_softwareupdate,/usr/bin/false
_coreaudiod,/usr/bin/false
_screensaver,/usr/bin/false
_locationd,/usr/bin/false
_trustevaluationagent,/usr/bin/false
_timezone,/usr/bin/false
_lda,/usr/bin/false
_cvmsroot,/usr/bin/false
_usbmuxd,/usr/bin/false
_dovecot,/usr/bin/false
_dpaudio,/usr/bin/false
_postgres,/usr/bin/false
_krbtgt,/usr/bin/false
_kadmin_admin,/usr/bin/false
_kadmin_changepw,/usr/bin/false
_devicemgr,/usr/bin/false
_webauthserver,/usr/bin/false
_netbios,/usr/bin/false
_warmd,/usr/bin/false
_dovenull,/usr/bin/false
_netstatistics,/usr/bin/false
_avbdeviced,/usr/bin/false
_krb_krbtgt,/usr/bin/false
_krb_kadmin,/usr/bin/false
_krb_changepw,/usr/bin/false
_krb_kerberos,/usr/bin/false
_krb_anonymous,/usr/bin/false
_assetcache,/usr/bin/false
_coremediaiod,/usr/bin/false
_launchservicesd,/usr/bin/false
_iconservices,/usr/bin/false
_distnote,/usr/bin/false
_nsurlsessiond,/usr/bin/false
_displaypolicyd,/usr/bin/false
_astris,/usr/bin/false
_krbfast,/usr/bin/false
_gamecontrollerd,/usr/bin/false
_mbsetupuser,/bin/bash
_ondemand,/usr/bin/false
_xserverdocs,/usr/bin/false
_wwwproxy,/usr/bin/false
_mobileasset,/usr/bin/false
_findmydevice,/usr/bin/false
_datadetectors,/usr/bin/false
_captiveagent,/usr/bin/false
_ctkd,/usr/bin/false
_applepay,/usr/bin/false
_hidd,/usr/bin/false
_cmiodalassistants,/usr/bin/false
_analyticsd,/usr/bin/false
_fpsd,/usr/bin/false
_timed,/usr/bin/false
_nearbyd,/usr/bin/false
_reportmemoryexception,/usr/bin/false
_driverkit,/usr/bin/false
_diskimagesiod,/usr/bin/false
_logd,/usr/bin/false
_appinstalld,/usr/bin/false
_installcoordinationd,/usr/bin/false
_demod,/usr/bin/false
_rmd,/usr/bin/false
_accessoryupdater,/usr/bin/false
_knowledgegraphd,/usr/bin/false
_coreml,/usr/bin/false
_sntpd,/usr/bin/false
_trustd,/usr/bin/false
_mmaintenanced,/usr/bin/false
_darwindaemon,/usr/bin/false
_notification_proxy,/usr/bin/false
_avphidbridge,/usr/bin/false
_biome,/usr/bin/false
_backgroundassets,/usr/bin/false
_mobilegestalthelper,/usr/bin/false
_audiomxd,/usr/bin/false
_terminusd,/usr/bin/false
_neuralengine,/usr/bin/false
_oahd,/usr/bin/false
  • Print login names and indicate those with UID>1000 as vip:
awk -F: -v status="" '{OFS = ","} 
{if ($3 >= 1000) status="vip"; else status="regular"} 
{print $1, status}' /etc/passwd
##,regular
# User Database,regular
# ,regular
# Note that this file is consulted directly only when the system is running,regular
# in single-user mode.  At other times this information is provided by,regular
# Open Directory.,regular
#,regular
# See the opendirectoryd(8) man page for additional information about,regular
# Open Directory.,regular
##,regular
nobody,regular
root,regular
daemon,regular
_uucp,regular
_taskgated,regular
_networkd,regular
_installassistant,regular
_lp,regular
_postfix,regular
_scsd,regular
_ces,regular
_appstore,regular
_mcxalr,regular
_appleevents,regular
_geod,regular
_devdocs,regular
_sandbox,regular
_mdnsresponder,regular
_ard,regular
_www,regular
_eppc,regular
_cvs,regular
_svn,regular
_mysql,regular
_sshd,regular
_qtss,regular
_cyrus,regular
_mailman,regular
_appserver,regular
_clamav,regular
_amavisd,regular
_jabber,regular
_appowner,regular
_windowserver,regular
_spotlight,regular
_tokend,regular
_securityagent,regular
_calendar,regular
_teamsserver,regular
_update_sharing,regular
_installer,regular
_atsserver,regular
_ftp,regular
_unknown,regular
_softwareupdate,regular
_coreaudiod,regular
_screensaver,regular
_locationd,regular
_trustevaluationagent,regular
_timezone,regular
_lda,regular
_cvmsroot,regular
_usbmuxd,regular
_dovecot,regular
_dpaudio,regular
_postgres,regular
_krbtgt,regular
_kadmin_admin,regular
_kadmin_changepw,regular
_devicemgr,regular
_webauthserver,regular
_netbios,regular
_warmd,regular
_dovenull,regular
_netstatistics,regular
_avbdeviced,regular
_krb_krbtgt,regular
_krb_kadmin,regular
_krb_changepw,regular
_krb_kerberos,regular
_krb_anonymous,regular
_assetcache,regular
_coremediaiod,regular
_launchservicesd,regular
_iconservices,regular
_distnote,regular
_nsurlsessiond,regular
_displaypolicyd,regular
_astris,regular
_krbfast,regular
_gamecontrollerd,regular
_mbsetupuser,regular
_ondemand,regular
_xserverdocs,regular
_wwwproxy,regular
_mobileasset,regular
_findmydevice,regular
_datadetectors,regular
_captiveagent,regular
_ctkd,regular
_applepay,regular
_hidd,regular
_cmiodalassistants,regular
_analyticsd,regular
_fpsd,regular
_timed,regular
_nearbyd,regular
_reportmemoryexception,regular
_driverkit,regular
_diskimagesiod,regular
_logd,regular
_appinstalld,regular
_installcoordinationd,regular
_demod,regular
_rmd,regular
_accessoryupdater,regular
_knowledgegraphd,regular
_coreml,regular
_sntpd,regular
_trustd,regular
_mmaintenanced,regular
_darwindaemon,regular
_notification_proxy,regular
_avphidbridge,regular
_biome,regular
_backgroundassets,regular
_mobilegestalthelper,regular
_audiomxd,regular
_terminusd,regular
_neuralengine,regular
_oahd,regular

6.7 Text editors

Source: Editor War on Wikipedia.

6.7.1 Emacs

  • Emacs is a powerful text editor with extensive support for many languages including R, \(\LaTeX\), python, and C/C++; however it’s not installed by default on many Linux distributions.

  • Basic survival commands:

    • emacs filename to open a file with emacs.
    • CTRL-x CTRL-f to open an existing or new file.
    • CTRL-x CTRX-s to save.
    • CTRL-x CTRL-w to save as.
    • CTRL-x CTRL-c to quit.
  • Google emacs cheatsheet

C-<key> means hold the control key, and press <key>.
M-<key> means press the Esc key once, and press <key>.

6.7.2 Vi

  • Vi is ubiquitous (POSIX standard). Learn at least its basics; otherwise you can edit nothing on some clusters.

  • Basic survival commands:

    • vi filename to start editing a file.
    • vi is a modal editor: insert mode and normal mode. Pressing i switches from the normal mode to insert mode. Pressing ESC switches from the insert mode to normal mode.
    • :x<Return> quits vi and saves changes.
    • :q!<Return> quits vi without saving latest changes.
    • :w<Return> saves changes.
    • :wq<Return> quits vi and saves changes.
  • Google vi cheatsheet

7 IDE (Integrated Development Environment)

  • Statisticians/data scientists write a lot of code. Critical to adopt a good IDE that goes beyond code editing: syntax highlighting, executing code within editor, debugging, profiling, version control, etc.

  • RStudio, Eclipse, Emacs, Matlab, Visual Studio, VS Code, etc.

8 Processes

8.1 Cancel a non-responding program

  • Press Ctrl+C to cancel a non-responding or long-running program.

8.2 Processes

  • OS runs processes on behalf of user.

  • Each process has Process ID (PID), Username (UID), Parent process ID (PPID), Time and data process started (STIME), time running (TIME), etc.

ps
  PID TTY           TIME CMD
38079 ttys000    0:00.05 -zsh
41784 ttys000    0:00.08 ssh huazhou@hoffman2.idre.ucla.edu
71201 ttys001    0:00.02 bash --rcfile /Applications/RStudio.app/Contents/Resources/app/resources/terminal/bash/.bash_profile
  • All current running processes:
ps -eaf
  UID   PID  PPID   C STIME   TTY           TIME CMD
    0     1     0   0 Sat10AM ??        53:42.69 /sbin/launchd
    0   500     1   0 Sat11AM ??         8:14.01 /usr/libexec/logd
    0   501     1   0 Sat11AM ??         0:00.37 /usr/libexec/smd
    0   502     1   0 Sat11AM ??         1:32.78 /usr/libexec/UserEventAgent (System)
    0   504     1   0 Sat11AM ??         0:06.35 /System/Library/PrivateFrameworks/Uninstall.framework/Resources/uninstalld
    0   505     1   0 Sat11AM ??         6:23.84 /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/FSEvents.framework/Versions/A/Support/fseventsd
    0   506     1   0 Sat11AM ??         0:10.39 /System/Library/PrivateFrameworks/MediaRemote.framework/Support/mediaremoted
    0   509     1   0 Sat11AM ??         0:17.69 /usr/sbin/systemstats --daemon
  278   511     1   0 Sat11AM ??         0:00.43 /System/Library/PrivateFrameworks/MobileAccessoryUpdater.framework/Support/accessoryupdaterd 120
    0   512     1   0 Sat11AM ??         2:05.14 /usr/libexec/configd
    0   513     1   0 Sat11AM ??         0:00.03 endpointsecurityd
    0   514     1   0 Sat11AM ??         1:52.02 /System/Library/CoreServices/powerd.bundle/powerd
    0   515     1   0 Sat11AM ??         0:00.68 /usr/libexec/IOMFB_bics_daemon
  289   516     1   0 Sat11AM ??         0:10.12 /System/Library/PrivateFrameworks/BiomeStreams.framework/Support/biomed
    0   518     1   0 Sat11AM ??         0:04.02 /usr/libexec/amfid
    0   520     1   0 Sat11AM ??         0:05.94 /usr/libexec/remoted
    0   522     1   0 Sat11AM ??         0:00.06 /usr/libexec/keybagd -t 15
  200   523     1   0 Sat11AM ??         0:00.84 /System/Library/PrivateFrameworks/MobileSoftwareUpdate.framework/Support/softwareupdated
    0   525     1   0 Sat11AM ??         0:03.23 /usr/libexec/watchdogd
  240   530     1   0 Sat11AM ??         0:00.43 /System/Library/CoreServices/iconservicesd
    0   531     1   0 Sat11AM ??         0:00.72 /usr/libexec/kernelmanagerd
    0   532     1   0 Sat11AM ??         2:37.36 /usr/libexec/diskarbitrationd
    0   536     1   0 Sat11AM ??         4:12.32 /usr/libexec/coreduetd
    0   537     1   0 Sat11AM ??         0:10.16 /usr/sbin/syslogd
    0   540     1   0 Sat11AM ??         0:29.96 /usr/libexec/thermalmonitord
    0   541     1   0 Sat11AM ??         6:09.72 /usr/libexec/opendirectoryd
    0   542     1   0 Sat11AM ??         1:20.63 /System/Library/PrivateFrameworks/ApplePushService.framework/apsd
    0   543     1   0 Sat11AM ??         1:06.94 /System/Library/CoreServices/launchservicesd
  266   544     1   0 Sat11AM ??         0:03.11 /usr/libexec/timed
  213   545     1   0 Sat11AM ??         0:45.00 /System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/Resources/usbmuxd -launchd
    0   546     1   0 Sat11AM ??         0:27.93 /usr/sbin/securityd -i
    0   547     1   0 Sat11AM ??         0:00.01 auditd -l
  205   549     1   0 Sat11AM ??         6:22.94 /usr/libexec/locationd
    0   551     1   0 Sat11AM ??         0:00.01 autofsd
    0   552     1   0 Sat11AM ??         4:09.16 /usr/libexec/dasd
  241   554     1   0 Sat11AM ??        20:58.26 /usr/sbin/distnoted daemon
    0   555     1   0 Sat11AM ??         0:00.09 /System/Library/PrivateFrameworks/AppleCredentialManager.framework/AppleCredentialManagerDaemon
    0   557     1   0 Sat11AM ??         0:00.02 /usr/libexec/dirhelper
    0   558     1   0 Sat11AM ??         0:00.08 /System/Library/CoreServices/logind
    0   559     1   0 Sat11AM ??         0:00.65 /System/Library/PrivateFrameworks/GenerationalStorage.framework/Versions/A/Support/revisiond
    0   560     1   0 Sat11AM ??         0:00.01 /usr/sbin/KernelEventAgent
    0   561     1   0 Sat11AM ??         0:01.92 /usr/libexec/usermanagerd -t 15
    0   563     1   0 Sat11AM ??         6:27.22 /usr/sbin/bluetoothd
    0   564     1   0 Sat11AM ??         3:03.03 /usr/sbin/notifyd
    0   565     1   0 Sat11AM ??         5:16.09 /usr/libexec/sandboxd
    0   566     1   0 Sat11AM ??         2:31.81 /usr/libexec/corebrightnessd --launchd
    0   567     1   0 Sat11AM ??         0:12.64 /usr/libexec/AirPlayXPCHelper
    0   568     1   0 Sat11AM ??         0:03.42 /System/Library/Frameworks/CoreMediaIO.framework/Versions/A/Resources/com.apple.cmio.registerassistantservice
    0   569     1   0 Sat11AM ??         0:03.76 /usr/libexec/logd_helper
   88   570     1   0 Sat11AM ??       245:59.84 /System/Library/PrivateFrameworks/SkyLight.framework/Resources/WindowServer -daemon
    0   571     1   0 Sat11AM ??         2:54.16 /usr/sbin/cfprefsd daemon
    0   572     1   0 Sat11AM ??         1:03.02 /System/Library/PrivateFrameworks/TCC.framework/Support/tccd system
    0   574     1   0 Sat11AM ??         1:06.43 /usr/libexec/lsd runAsRoot
    0   575     1   0 Sat11AM ??         0:00.12 aslmanager
    0   576     1   0 Sat11AM ??         0:38.92 /System/Library/PrivateFrameworks/CoreDuetContext.framework/Resources/contextstored
    0   577     1   0 Sat11AM ??         0:13.00 /System/Library/CoreServices/coreservicesd
    0   578     1   0 Sat11AM ??         6:14.63 /usr/libexec/runningboardd
  202   582     1   0 Sat11AM ??        18:25.60 /usr/sbin/coreaudiod
  282   589     1   0 Sat11AM ??         6:31.07 /usr/libexec/trustd
    0   590     1   0 Sat11AM ??         1:22.00 /usr/libexec/apfsd
    0   591     1   0 Sat11AM ??         0:04.81 /usr/libexec/nehelper
  242   592     1   0 Sat11AM ??         0:09.56 /usr/libexec/nsurlsessiond --privileged
    0   593     1   0 Sat11AM ??        15:22.92 /usr/libexec/airportd
    0   594     1   0 Sat11AM ??         0:00.13 /System/Library/PrivateFrameworks/CoreAccessories.framework/Support/accessoryd
    0   595     1   0 Sat11AM ??         0:00.21 /usr/libexec/usbd
  263   596     1   0 Sat11AM ??         0:35.31 /System/Library/PrivateFrameworks/CoreAnalytics.framework/Support/analyticsd
    0   597     1   0 Sat11AM ??         0:01.05 /usr/libexec/biometrickitd --launchd
    0   599     1   0 Sat11AM ??         0:00.04 /usr/libexec/trustdFileHelper
    0   602     1   0 Sat11AM ??         0:00.32 /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonCore.framework/Versions/A/XPCServices/csnameddatad.xpc/Contents/MacOS/csnameddatad
    0   603     1   0 Sat11AM ??         1:46.11 /usr/sbin/distnoted agent
    0   605     1   0 Sat11AM ??         0:30.62 /System/Library/CoreServices/backupd.bundle/Contents/Resources/backupd-helper -launchd
    0   607     1   0 Sat11AM ??         0:01.04 /usr/libexec/PowerUIAgent
    0   608     1   0 Sat11AM ??         0:00.01 /usr/libexec/cryptexd
  202   610     1   0 Sat11AM ??         1:12.54 /usr/sbin/distnoted agent
    0   612     1   0 Sat11AM ??         6:00.64 /usr/libexec/mobileassetd
   65   619     1   0 Sat11AM ??         2:02.09 /usr/sbin/mDNSResponder
    0   630     1   0 Sat11AM ??         0:04.15 /System/Library/PrivateFrameworks/SystemStatusServer.framework/Support/systemstatusd
  261   638     1   0 Sat11AM ??         0:00.05 /usr/libexec/hidd
   88   641     1   0 Sat11AM ??         1:13.93 /usr/sbin/distnoted agent
    0   659     1   0 Sat11AM ??         2:34.49 /System/Library/Frameworks/Security.framework/Versions/A/XPCServices/authd.xpc/Contents/MacOS/authd
    0   663     1   0 Sat11AM ??         0:00.75 /usr/libexec/secinitd
    0   664     1   0 Sat11AM ??         0:01.04 /usr/libexec/securityd_system
    0   667     1   0 Sat11AM ??        11:53.99 /usr/libexec/storagekitd
  202   669     1   0 Sat11AM ??         0:08.84 Core Audio Driver (MSTeamsAudioDevice.driver)
  202   670     1   0 Sat11AM ??         0:00.01 /System/Library/Frameworks/CoreAudio.framework/Versions/A/XPCServices/com.apple.audio.DriverHelper.xpc/Contents/MacOS/com.apple.audio.DriverHelper
    0   671     1   0 Sat11AM ??         5:00.85 /usr/libexec/syspolicyd
    0   672     1   0 Sat11AM ??         0:00.06 /System/Library/Frameworks/AudioToolbox.framework/AudioComponentRegistrar -daemon
    0   673     1   0 Sat11AM ??         0:00.04 /usr/libexec/colorsync.displayservices
  202   674     1   0 Sat11AM ??         0:00.02 /System/Library/Frameworks/AudioToolbox.framework/XPCServices/com.apple.audio.SandboxHelper.xpc/Contents/MacOS/com.apple.audio.SandboxHelper
    0   675     1   0 Sat11AM ??         1:12.37 /usr/libexec/audioclocksyncd
    0   676     1   0 Sat11AM ??         0:07.89 /usr/sbin/WirelessRadioManagerd
    0   679     1   0 Sat11AM ??         0:00.12 /usr/libexec/containermanagerd_system --runmode=privileged --user-container-mode=current --bundle-container-mode=global --bundle-container-owner=_appinstalld --system-container-mode=none
    0   680     1   0 Sat11AM ??         0:00.01 /System/Library/PrivateFrameworks/WiFiPolicy.framework/XPCServices/WiFiCloudAssetsXPCService.xpc/Contents/MacOS/WiFiCloudAssetsXPCService
    0   681     1   0 Sat11AM ??         0:00.01 /System/Library/Frameworks/ColorSync.framework/Versions/A/XPCServices/com.apple.ColorSyncXPCAgent.xpc/Contents/MacOS/com.apple.ColorSyncXPCAgent
    0   682     1   0 Sat11AM ??         0:00.17 /usr/libexec/findmybeaconingd
    0   683     1   0 Sat11AM ??         1:35.11 /usr/libexec/wifip2pd
    0   684     1   0 Sat11AM ??         0:00.04 /usr/libexec/colorsyncd
    0   686     1   0 Sat11AM ??         0:01.43 /usr/libexec/nesessionmanager
    0   687     1   0 Sat11AM ??         0:01.55 /System/Library/Frameworks/Security.framework/Versions/A/XPCServices/com.apple.CodeSigningHelper.xpc/Contents/MacOS/com.apple.CodeSigningHelper
  262   688     1   0 Sat11AM ??         0:59.54 /usr/sbin/distnoted agent
    0   689     1   0 Sat11AM ??         0:00.20 /System/Library/Frameworks/SystemExtensions.framework/Versions/A/Helpers/sysextd
    0   690     1   0 Sat11AM ??         0:04.51 /usr/libexec/audioanalyticsd
  202   691     1   0 Sat11AM ??         0:00.03 /System/Library/PrivateFrameworks/ZhuGeSupport.framework/Versions/A/XPCServices/ZhuGeService.xpc/Contents/MacOS/ZhuGeService
    0   692     1   0 Sat11AM ??         0:07.38 /usr/sbin/mDNSResponderHelper
  200   693     1   0 Sat11AM ??         0:33.55 /System/Library/CoreServices/Software Update.app/Contents/Resources/softwareupdated
   24   694     1   0 Sat11AM ??         2:27.83 /usr/libexec/symptomsd
    0   695     1   0 Sat11AM ??         0:00.89 /System/Library/PrivateFrameworks/BackgroundTaskManagement.framework/Resources/backgroundtaskmanagementd -daemon
  270   699     1   0 Sat11AM ??         0:00.07 /System/Library/DriverExtensions/com.apple.DriverKit-IOUserDockChannelSerial.dext/com.apple.DriverKit-IOUserDockChannelSerial com.apple.IOUserDockChannelSerial 0x1000011c5 com.apple.DriverKit-IOUserDockChannelSerial
  270   701     1   0 Sat11AM ??         0:01.37 /System/Library/DriverExtensions/com.apple.AppleUserHIDDrivers.dext/com.apple.AppleUserHIDDrivers com.apple.driverkit.AppleUserHIDDrivers 0x1000011e8 com.apple.AppleUserHIDDrivers
    0   702     1   0 Sat11AM ??         0:00.06 /System/Library/CoreServices/Software Update.app/Contents/Resources/suhelperd
  200   704     1   0 Sat11AM ??         1:00.49 /usr/sbin/distnoted agent
    0   707     1   0 Sat11AM ??         0:00.04 /usr/libexec/tzlinkd
    0   708     1   0 Sat11AM ??         0:56.36 /System/Library/CoreServices/backupd.bundle/Contents/Resources/backupd
    0   711     1   0 Sat11AM ??         0:05.51 /usr/libexec/rtcreportingd
  262   716     1   0 Sat11AM ??         0:12.92 /usr/sbin/appleh13camerad
    0   719     1   0 Sat11AM ??         0:00.27 /usr/libexec/symptomsd-diag
  262   721     1   0 Sat11AM ??         0:00.20 /System/Library/Frameworks/CoreMediaIO.framework/Versions/A/Resources/UVCAssistant.systemextension/Contents/MacOS/UVCAssistant
    0   728     1   0 Sat11AM ??         0:00.02 /System/Library/PrivateFrameworks/PowerLog.framework/Versions/A/XPCServices/PerfPowerTelemetryClientRegistrationService.xpc/Contents/MacOS/PerfPowerTelemetryClientRegistrationService
  205   730     1   0 Sat11AM ??         0:07.33 /System/Library/PrivateFrameworks/GeoServices.framework/Versions/A/XPCServices/com.apple.geod.xpc/Contents/MacOS/com.apple.geod
  205   731     1   0 Sat11AM ??         1:00.07 /usr/sbin/distnoted agent
  205   737     1   0 Sat11AM ??         0:00.17 /usr/libexec/secinitd
  205   755     1   0 Sat11AM ??         0:00.06 /usr/sbin/cfprefsd agent
  205   761     1   0 Sat11AM ??         0:00.48 /usr/libexec/trustd --agent
    0   763     1   0 Sat11AM ??         0:21.44 /usr/libexec/wifianalyticsd
  205   764     1   0 Sat11AM ??         0:00.07 /usr/libexec/containermanagerd --runmode=agent --user-container-mode=current --bundle-container-mode=proxy --system-container-mode=none
    0   769     1   0 Sat11AM ??         0:12.48 /Library/Apple/System/Library/CoreServices/XProtect.app/Contents/XPCServices/XProtectPluginService.xpc/Contents/MacOS/XProtectPluginService
    0   770     1   0 Sat11AM ??         0:07.82 /System/Library/PrivateFrameworks/GeoServices.framework/Versions/A/XPCServices/com.apple.geod.xpc/Contents/MacOS/com.apple.geod
    0   771     1   0 Sat11AM ??         0:00.02 /System/Library/PrivateFrameworks/SystemAdministration.framework/XPCServices/writeconfig.xpc/Contents/MacOS/writeconfig
  262   774     1   0 Sat11AM ??         0:06.23 /System/Library/PrivateFrameworks/GeoServices.framework/Versions/A/XPCServices/com.apple.geod.xpc/Contents/MacOS/com.apple.geod
  262   775     1   0 Sat11AM ??         0:00.16 /usr/libexec/secinitd
  262   776     1   0 Sat11AM ??         0:00.06 /usr/sbin/cfprefsd agent
  262   778     1   0 Sat11AM ??         0:00.45 /usr/libexec/trustd --agent
  262   779     1   0 Sat11AM ??         0:00.07 /usr/libexec/containermanagerd --runmode=agent --user-container-mode=current --bundle-container-mode=proxy --system-container-mode=none
    0   781     1   0 Sat11AM ??        10:48.50 /usr/libexec/searchpartyd
    0   782     1   0 Sat11AM ??         0:00.52 /System/Library/PrivateFrameworks/MobileSoftwareUpdate.framework/Versions/A/XPCServices/com.apple.MobileSoftwareUpdate.CleanupPreparePathService.xpc/Contents/MacOS/com.apple.MobileSoftwareUpdate.CleanupPreparePathService
  278   784     1   0 Sat11AM ??         0:57.47 /usr/sbin/distnoted agent
  278   785     1   0 Sat11AM ??         0:00.07 /System/Library/PrivateFrameworks/MobileAccessoryUpdater.framework/XPCServices/UARPUpdaterServiceDisplay.xpc/Contents/MacOS/UARPUpdaterServiceDisplay
  278   788     1   0 Sat11AM ??         0:00.04 /System/Library/PrivateFrameworks/MobileAccessoryUpdater.framework/XPCServices/UARPUpdaterServiceAFU.xpc/Contents/MacOS/UARPUpdaterServiceAFU
  278   789     1   0 Sat11AM ??         0:00.15 /System/Library/PrivateFrameworks/MobileAccessoryUpdater.framework/XPCServices/UARPUpdaterServiceLegacyAudio.xpc/Contents/MacOS/UARPUpdaterServiceLegacyAudio
  278   790     1   0 Sat11AM ??         0:05.16 /System/Library/PrivateFrameworks/MobileAccessoryUpdater.framework/XPCServices/UARPUpdaterServiceUSBPD.xpc/Contents/MacOS/UARPUpdaterServiceUSBPD
  278   791     1   0 Sat11AM ??         0:00.07 /System/Library/PrivateFrameworks/MobileAccessoryUpdater.framework/XPCServices/UARPUpdaterServiceHID.xpc/Contents/MacOS/UARPUpdaterServiceHID
  278   792     1   0 Sat11AM ??         0:00.07 /System/Library/PrivateFrameworks/MobileAccessoryUpdater.framework/XPCServices/ThunderboltAccessoryUpdaterService.xpc/Contents/MacOS/ThunderboltAccessoryUpdaterService
  278   793     1   0 Sat11AM ??         0:06.46 /System/Library/PrivateFrameworks/GeoServices.framework/Versions/A/XPCServices/com.apple.geod.xpc/Contents/MacOS/com.apple.geod
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  278   796     1   0 Sat11AM ??         0:00.06 /usr/sbin/cfprefsd agent
    0   797     1   0 Sat11AM ??         0:54.54 /usr/libexec/sysmond
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  202   808     1   0 Sat11AM ??         0:03.10 Core Audio Driver (ZoomAudioDevice.driver)
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  504  1288     1   0 Sat11AM ??         0:00.02 /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonCore.framework/Versions/A/XPCServices/csnameddatad.xpc/Contents/MacOS/csnameddatad
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   89  1329     1   0 Sat11AM ??         0:17.92 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Versions/A/Support/mdbulkimport -s mdworker-bundle -c MDSImporterBundleFinder -m com.apple.metadata.mdbulkimport
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    0  1901     1   0 Sat11AM ??         0:15.49 /usr/libexec/aned
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  294  1903     1   0 Sat11AM ??         0:00.67 /usr/libexec/audiomxd
   89  1949     1   0 Sat11AM ??         0:00.06 /usr/libexec/containermanagerd --runmode=agent --user-container-mode=current --bundle-container-mode=proxy --system-container-mode=none
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  504  2026     1   0 Sat11AM ??         0:00.64 /System/Library/Frameworks/Security.framework/Versions/A/XPCServices/TrustedPeersHelper.xpc/Contents/MacOS/TrustedPeersHelper
  247  2033     1   0 Sat11AM ??         0:08.61 /usr/libexec/gamecontrollerd
  260  2034     1   0 Sat11AM ??         0:00.07 /usr/libexec/seld
  504  2058     1   0 Sat11AM ??         0:18.70 /usr/libexec/secinitd
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   55  2075     1   0 Sat11AM ??         0:57.22 /usr/sbin/distnoted agent
  504  2077     1   0 Sat11AM ??         0:04.01 /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/XPCServices/com.apple.hiservices-xpcservice.xpc/Contents/MacOS/com.apple.hiservices-xpcservice
  504  2080     1   0 Sat11AM ??         0:01.45 /System/Library/Frameworks/CryptoTokenKit.framework/ctkd -tw
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  235  2228     1   0 Sat11AM ??         0:01.09 /System/Library/PrivateFrameworks/AssetCacheServices.framework/Versions/A/XPCServices/AssetCacheLocatorService.xpc/Contents/MacOS/AssetCacheLocatorService -d
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  501  4343     1   0 Sat11AM ??         0:15.43 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Versions/A/Support/mdbulkimport -s mdworker-bundle -c MDSImporterBundleFinder -m com.apple.metadata.mdbulkimport
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  501  4346     1   0 Sat11AM ??         0:00.06 /usr/sbin/cfprefsd agent
  501  4347     1   0 Sat11AM ??         0:00.55 /usr/libexec/pkd
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  503  4354     1   0 Sat11AM ??         0:13.72 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Versions/A/Support/mdbulkimport -s mdworker-bundle -c MDSImporterBundleFinder -m com.apple.metadata.mdbulkimport
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  503  4361     1   0 Sat11AM ??         0:00.01 /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonCore.framework/Versions/A/XPCServices/csnameddatad.xpc/Contents/MacOS/csnameddatad
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  504 27510     1   0  9:51AM ??         0:17.12 /usr/local/libexec/Citrix Workspace Helper.app/Contents/MacOS/Citrix Workspace Helper
  504 27511     1   0  9:51AM ??         0:04.63 /Applications/Utilities/Adobe Creative Cloud/ACC/Creative Cloud.app/Contents/MacOS/Creative Cloud --showwindow=false --onOSstartup=true
  504 27512     1   0  9:51AM ??         0:24.90 /Applications/Aruba Networks/ClearPassOnGuard.app/Contents/MacOS/ClearPassOnGuard
  504 27514     1   0  9:51AM ??         2:26.87 /Library/Application Support/iStat Menus 6/iStat Menus Status.app/Contents/MacOS/iStat Menus Status
  504 27516     1   0  9:51AM ??         0:02.28 /System/Library/CoreServices/TextInputMenuAgent.app/Contents/MacOS/TextInputMenuAgent
  504 27517     1   0  9:51AM ??         0:00.29 /Applications/Grammarly Desktop.app//Contents/Library//LaunchAgents/Grammarly Desktop Helper.app/Contents/MacOS/Grammarly Desktop Helper
  504 27519     1   0  9:51AM ??         0:05.07 /usr/local/libexec/ServiceRecords.app/Contents/MacOS/ServiceRecords
  504 27521     1   0  9:51AM ??         0:00.03 /System/Library/Frameworks/CryptoTokenKit.framework/ctkahp.bundle/Contents/MacOS/ctkahp
  504 27522     1   0  9:51AM ??         0:00.70 /Applications/Adobe Acrobat DC/Adobe Acrobat.app/Contents/Helpers/AdobeResourceSynchronizer.app/Contents/MacOS/AdobeResourceSynchronizer
  504 27523     1   0  9:51AM ??         0:00.26 /System/Library/CoreServices/TextInputSwitcher.app/Contents/MacOS/TextInputSwitcher
  504 27525     1   0  9:51AM ??         0:00.06 /System/Library/PrivateFrameworks/CoreEmbeddedSpeechRecognition.framework/Versions/A/XPCServices/com.apple.siri.embeddedspeech.xpc/Contents/MacOS/com.apple.siri.embeddedspeech
  504 27526     1   0  9:51AM ??         0:28.50 /Applications/Grammarly Desktop.app/Contents/MacOS/Grammarly Desktop launchSourceLoginItem
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  504 27532     1   0  9:51AM ??         0:01.04 /System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.Networking.xpc/Contents/MacOS/com.apple.WebKit.Networking
  504 27537     1   0  9:51AM ??         0:07.29 /Applications/Box.app/Contents/MacOS/Box
  504 27538     1   0  9:51AM ??         0:24.17 /Applications/Utilities/Adobe Creative Cloud Experience/CCXProcess/CCXProcess.app/Contents/MacOS/../libs/Creative Cloud Content Manager.node /Applications/Utilities/Adobe Creative Cloud Experience/CCXProcess/CCXProcess.app/Contents/MacOS/../js/main.js
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  504 27566     1   0  9:51AM ??         0:00.12 /usr/libexec/MTLAssetUpgraderD
  504 27567     1   0  9:51AM ??         0:00.60 /usr/libexec/siriknowledged
  504 27582     1   0  9:51AM ??         0:02.26 /System/Library/PrivateFrameworks/UIFoundation.framework/Versions/A/XPCServices/nsattributedstringagent.xpc/Contents/MacOS/nsattributedstringagent
  504 27587 27511   0  9:51AM ??         0:00.73 /Applications/Utilities/Adobe Creative Cloud/ACC/Creative Cloud.app/Contents/MacOS/../Frameworks/Creative Cloud UI Helper (GPU).app/Contents/MacOS/Creative Cloud UI Helper (GPU) --type=gpu-process --no-sandbox --locales-dir-path=/Library/Application Support/Adobe/Adobe Desktop Common/CEF/Chromium Embedded Framework.framework/Resources --log-severity=warning --user-agent=Mozilla/5.0 (Macintosh; Apple Silicon14_2_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.5845.190 Safari/537.36 CreativeCloud/6.1.0.587 --lang=en --user-data-dir=/Users/huazhou/Library/Application Support/CEF/User Data --gpu-preferences=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 --log-file=/Users/huazhou/Library/Logs/CreativeCloud/ACC/CEF.log --shared-files --field-trial-handle=1718379636,r,2999415095704817102,13308755814634682942,262144 --disable-features=BackForwardCache,DocumentPictureInPictureAPI
  504 27605     1   0  9:51AM ??         0:09.57 /Applications/Adobe Acrobat DC/Adobe Acrobat.app/Contents/Frameworks/AdobeCrashReporter.framework/Versions/A/Adobe Crash Processor.app/Contents/MacOS/Adobe Crash Processor
  504 27607 27415   0  9:51AM ??         0:00.80 /Applications/Adobe Acrobat DC/Adobe Acrobat.app/Contents/Frameworks/AcroCEF Helper (Renderer).app/Contents/MacOS/AcroCEF Helper (Renderer) --type=renderer --log-severity=disable --user-agent-product=AcrobatServices/23.8.20423 Chrome/105.0.0.0 --user-data-dir=/Users/huazhou/Library/Application Support/Adobe/AcroCef/DC/Acrobat/UserData --log-file=/Users/huazhou/Library/Logs/AcroCEF_debug.log --touch-events=enabled --lang=en-US --num-raster-threads=4 --enable-zero-copy --enable-gpu-memory-buffer-compositor-resources --enable-main-frame-before-activation --renderer-client-id=8 --launch-time-ticks=192879643436 --shared-files --field-trial-handle=1718379636,r,2001171935630487320,10124133901262452571,131072 --disable-features=BackForwardCache --seatbelt-client=31
  504 27651     1   0  9:51AM ??         0:02.93 /usr/libexec/biomesyncd
  504 27660 27537   0  9:51AM ??         0:00.74 /Applications/Box.app/Contents/Resources/Box UI.app/Contents/MacOS/Box UI --product-name Box
  504 27669     1   0  9:51AM ??         0:00.06 /System/Library/Frameworks/Metal.framework/Versions/A/XPCServices/MTLCompilerService.xpc/Contents/MacOS/MTLCompilerService
  504 27670 27537   0  9:51AM ??         0:19.46 /Applications/Box.app/Contents/MacOS/fpe/streem --log-level info --folder-prefetch-depth 1 --product-name Box --default-refetch-timeout-seconds 864000 --database-id 9d61bf28-5420-11ee-8aa0-54de2d1375e6 --enable-macos-14-workaround
  504 27673 27511   0  9:51AM ??         0:10.51 /Library/Application Support/Adobe/Adobe Desktop Common/ADS/Adobe Desktop Service.app/Contents/MacOS/Adobe Desktop Service --onOSstartup=true --showwindow=false --waitForRegistration=true
  504 27674 27511   0  9:51AM ??         0:00.03 /Applications/Utilities/Adobe Creative Cloud/ACC/Creative Cloud.app/Contents/MacOS/../Frameworks/Creative Cloud UI Helper.app/Contents/MacOS/Creative Cloud UI Helper --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en --service-sandbox-type=service --no-sandbox --use-mock-keychain --locales-dir-path=/Library/Application Support/Adobe/Adobe Desktop Common/CEF/Chromium Embedded Framework.framework/Resources --log-severity=warning --user-agent=Mozilla/5.0 (Macintosh; Apple Silicon14_2_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.5845.190 Safari/537.36 CreativeCloud/6.1.0.587 --lang=en --user-data-dir=/Users/huazhou/Library/Application Support/CEF/User Data --log-file=/Users/huazhou/Library/Logs/CreativeCloud/ACC/CEF.log --shared-files --field-trial-handle=1718379636,r,2999415095704817102,13308755814634682942,262144 --disable-features=BackForwardCache,DocumentPictureInPictureAPI
  504 27675 27511   0  9:51AM ??         0:00.16 /Applications/Utilities/Adobe Creative Cloud/ACC/Creative Cloud.app/Contents/MacOS/../Frameworks/Creative Cloud UI Helper.app/Contents/MacOS/Creative Cloud UI Helper --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en --service-sandbox-type=network --no-sandbox --use-mock-keychain --locales-dir-path=/Library/Application Support/Adobe/Adobe Desktop Common/CEF/Chromium Embedded Framework.framework/Resources --log-severity=warning --user-agent=Mozilla/5.0 (Macintosh; Apple Silicon14_2_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.5845.190 Safari/537.36 CreativeCloud/6.1.0.587 --lang=en --user-data-dir=/Users/huazhou/Library/Application Support/CEF/User Data --log-file=/Users/huazhou/Library/Logs/CreativeCloud/ACC/CEF.log --shared-files --field-trial-handle=1718379636,r,2999415095704817102,13308755814634682942,262144 --disable-features=BackForwardCache,DocumentPictureInPictureAPI
  504 27676 27511   0  9:51AM ??         0:29.12 /Applications/Utilities/Adobe Creative Cloud/ACC/Creative Cloud.app/Contents/MacOS/../Frameworks/Creative Cloud UI Helper (Renderer).app/Contents/MacOS/Creative Cloud UI Helper (Renderer) --type=renderer --locales-dir-path=/Library/Application Support/Adobe/Adobe Desktop Common/CEF/Chromium Embedded Framework.framework/Resources --log-severity=warning --user-agent=Mozilla/5.0 (Macintosh; Apple Silicon14_2_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.5845.190 Safari/537.36 CreativeCloud/6.1.0.587 --user-data-dir=/Users/huazhou/Library/Application Support/CEF/User Data --first-renderer-process --no-sandbox --autoplay-policy=no-user-gesture-required --log-file=/Users/huazhou/Library/Logs/CreativeCloud/ACC/CEF.log --js-flags=--expose-gc --lang=en --num-raster-threads=4 --enable-zero-copy --enable-gpu-memory-buffer-compositor-resources --enable-main-frame-before-activation --renderer-client-id=5 --time-ticks-at-unix-epoch=-1703506631826089 --launch-time-ticks=192880339521 --shared-files --field-trial-handle=1718379636,r,2999415095704817102,13308755814634682942,262144 --disable-features=BackForwardCache,DocumentPictureInPictureAPI
  504 27681     1   0  9:51AM ??         0:00.15 /System/Library/CoreServices/Keychain Circle Notification.app/Contents/MacOS/Keychain Circle Notification
  504 27683     1   0  9:51AM ??         0:00.04 /System/Library/PrivateFrameworks/ProtectedCloudStorage.framework/Helpers/ProtectedCloudKeySyncing
  504 27688 27537   0  9:51AM ??         0:00.03 /Applications/Box.app/Contents/MacOS/python -B -c from multiprocessing.resource_tracker import main;main(31)
  504 27721     1   0  9:51AM ??         0:00.02 /System/Library/Frameworks/AudioToolbox.framework/XPCServices/com.apple.audio.SandboxHelper.xpc/Contents/MacOS/com.apple.audio.SandboxHelper
  504 27778     1   0  9:51AM ??         0:00.04 /System/Library/PrivateFrameworks/CommunicationsFilter.framework/CMFSyncAgent
  504 27797     1   0  9:51AM ??         0:00.93 /Library/Apple/System/Library/CoreServices/XProtect.app/Contents/XPCServices/XProtectPluginService.xpc/Contents/MacOS/XProtectPluginService
  504 27875     1   0  9:51AM ??         0:00.08 /System/Library/PrivateFrameworks/AssetCacheServices.framework/Versions/A/XPCServices/AssetCacheLocatorService.xpc/Contents/MacOS/AssetCacheLocatorService -a
  504 27886     1   0  9:51AM ??         0:01.41 /System/Library/PrivateFrameworks/IntelligencePlatformCompute.framework/Versions/A/XPCServices/IntelligencePlatformComputeService.xpc/Contents/MacOS/IntelligencePlatformComputeService
  504 27920     1   0  9:51AM ??         0:00.05 /usr/libexec/naturallanguaged
  504 27926     1   0  9:51AM ??         0:01.06 /System/Library/PrivateFrameworks/PhotoAnalysis.framework/Versions/A/Support/photoanalysisd
  504 27927     1   0  9:51AM ??         0:00.27 /System/Library/Frameworks/FinanceKit.framework/financed
  504 27928     1   0  9:51AM ??         0:00.08 /usr/libexec/diagnosticextensionsd
  504 27929     1   0  9:51AM ??         0:00.18 /System/Library/PrivateFrameworks/SoftwareUpdate.framework/Resources/SoftwareUpdateNotificationManager.app/Contents/MacOS/SoftwareUpdateNotificationManager
  504 27931     1   0  9:51AM ??         0:00.20 /usr/libexec/adprivacyd
  504 27960     1   0  9:52AM ??         0:34.15 /Applications/Utilities/Adobe Sync/CoreSync/Core Sync.app/Contents/MacOS/Core Sync
  504 27970     1   0  9:52AM ??         0:00.03 /System/Applications/Weather.app/Contents/PlugIns/WeatherIntents.appex/Contents/MacOS/WeatherIntents -AppleLanguages ("en-US", "zh-Hans-US")
  504 27971     1   0  9:52AM ??         0:00.02 /System/Library/Frameworks/AudioToolbox.framework/XPCServices/com.apple.audio.ComponentTagHelper.xpc/Contents/MacOS/com.apple.audio.ComponentTagHelper
  504 27973     1   0  9:52AM ??         0:00.02 /System/Library/PrivateFrameworks/Categories.framework/Versions/A/XPCServices/CategoriesService.xpc/Contents/MacOS/CategoriesService
  504 27976     1   0  9:52AM ??         0:00.20 /usr/libexec/appleaccountd
  504 27984     1   0  9:52AM ??         0:00.24 cloudphotod
  504 27997     1   0  9:52AM ??         0:00.03 /System/Library/PrivateFrameworks/TextToSpeech.framework/PlugIns/SiriAUSP.appex/Contents/MacOS/SiriAUSP -AppleLanguages ("en-US", "zh-Hans-US")
  504 27998     1   0  9:52AM ??         0:00.06 /System/Library/PrivateFrameworks/MacinTalk.framework/Versions/A/PlugIns/WardaSynthesizer_x86_64.appex/Contents/MacOS/WardaSynthesizer_x86_64 -AppleLanguages ("en-US", "zh-Hans-US")
  504 28002     1   0  9:52AM ??         0:00.02 /System/Library/Frameworks/AudioToolbox.framework/XPCServices/com.apple.audio.SandboxHelper.xpc/Contents/MacOS/com.apple.audio.SandboxHelper
  504 28005     1   0  9:52AM ??         0:04.92 /Applications/Citrix Workspace.app/Contents/MacOS/Citrix Workspace LaunchStatusMenuFromHelper
  504 28007     1   0  9:52AM ??         0:03.54 /Library/Application Support/Adobe/Creative Cloud Libraries/CCLibrary.app/Contents/MacOS/../libs/node /Library/Application Support/Adobe/Creative Cloud Libraries/CCLibrary.app/Contents/MacOS/../js/server.js
    0 28008     1   0  9:52AM ??         0:00.02 /System/Library/Frameworks/Metal.framework/Versions/A/XPCServices/MTLCompilerService.xpc/Contents/MacOS/MTLCompilerService
  504 28009     1   0  9:52AM ??         0:00.13 /System/Library/PrivateFrameworks/TextToSpeechVoiceBankingSupport.framework/Support/voicebankingd
  504 28010     1   0  9:52AM ??         0:00.03 /System/Library/PrivateFrameworks/MacinTalk.framework/Versions/A/PlugIns/WardaSynthesizer_arm64.appex/Contents/MacOS/WardaSynthesizer_arm64 -AppleLanguages ("en-US", "zh-Hans-US")
  504 28011     1   0  9:52AM ??         0:00.07 /System/Library/PrivateFrameworks/MacinTalk.framework/Versions/A/PlugIns/MacinTalkAUSP.appex/Contents/MacOS/MacinTalkAUSP -AppleLanguages ("en-US", "zh-Hans-US")
  504 28012     1   0  9:52AM ??         0:00.02 /System/Library/Frameworks/AudioToolbox.framework/XPCServices/com.apple.audio.SandboxHelper.xpc/Contents/MacOS/com.apple.audio.SandboxHelper
  504 28013     1   0  9:52AM ??         0:00.02 /System/Library/Frameworks/AudioToolbox.framework/XPCServices/com.apple.audio.SandboxHelper.xpc/Contents/MacOS/com.apple.audio.SandboxHelper
  504 28014     1   0  9:52AM ??         0:00.02 /System/Library/Frameworks/AudioToolbox.framework/XPCServices/com.apple.audio.SandboxHelper.xpc/Contents/MacOS/com.apple.audio.SandboxHelper
  504 28015     1   0  9:52AM ??         0:00.02 /System/Library/PrivateFrameworks/TextToSpeechKonaSupport.framework/Versions/A/PlugIns/KonaSynthesizer.appex/Contents/MacOS/KonaSynthesizer -AppleLanguages ("en-US", "zh-Hans-US")
  504 28016     1   0  9:52AM ??         0:00.06 /System/Library/PrivateFrameworks/TextToSpeechMauiSupport.framework/Versions/A/PlugIns/MauiAUSP.appex/Contents/MacOS/MauiAUSP -AppleLanguages ("en-US", "zh-Hans-US")
  504 28017     1   0  9:52AM ??         0:00.02 /System/Library/PrivateFrameworks/SiriTTSService.framework/Versions/A/XPCServices/com.apple.SiriTTSService.TrialProxy.xpc/Contents/MacOS/com.apple.SiriTTSService.TrialProxy
  504 28018     1   0  9:52AM ??         0:00.02 /System/Library/Frameworks/AudioToolbox.framework/XPCServices/com.apple.audio.SandboxHelper.xpc/Contents/MacOS/com.apple.audio.SandboxHelper
  504 28019     1   0  9:52AM ??         0:00.02 /System/Library/Frameworks/AudioToolbox.framework/XPCServices/com.apple.audio.SandboxHelper.xpc/Contents/MacOS/com.apple.audio.SandboxHelper
  504 28021     1   0  9:52AM ??         0:00.27 /System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent
  504 28022     1   0  9:52AM ??         0:00.09 /System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.Networking.xpc/Contents/MacOS/com.apple.WebKit.Networking
  504 28025     1   0  9:52AM ??         0:00.03 /System/Library/PrivateFrameworks/SiriTTSService.framework/Versions/A/XPCServices/com.apple.SiriTTSService.TrialProxy.xpc/Contents/MacOS/com.apple.SiriTTSService.TrialProxy
  504 28028     1   0  9:52AM ??         0:00.15 /System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent
  504 28029     1   0  9:52AM ??         0:00.16 /System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent
  504 28040     1   0  9:52AM ??         0:00.10 /System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.GPU.xpc/Contents/MacOS/com.apple.WebKit.GPU
  504 28043     1   0  9:52AM ??         0:00.02 /System/Library/Frameworks/ColorSync.framework/Support/colorsync.useragent
  504 28044     1   0  9:52AM ??         0:00.01 /System/Library/Frameworks/ColorSync.framework/Versions/A/XPCServices/com.apple.ColorSyncXPCAgent.xpc/Contents/MacOS/com.apple.ColorSyncXPCAgent
  504 28056     1   0  9:52AM ??         0:03.74 /System/Library/PrivateFrameworks/DataAccess.framework/Support/dataaccessd
  504 28071     1   0  9:52AM ??         0:00.07 /usr/libexec/seserviced
  504 28072     1   0  9:52AM ??         0:00.03 /System/Library/Frameworks/ExtensionFoundation.framework/Versions/A/XPCServices/extensionkitservice.xpc/Contents/MacOS/extensionkitservice
  504 28074     1   0  9:52AM ??         0:00.05 /System/Volumes/Preboot/Cryptexes/App/System/Applications/Safari.app/Contents/Extensions/SafariLinkExtension.appex/Contents/MacOS/SafariLinkExtension
  504 28076     1   0  9:52AM ??         0:00.04 /System/Applications/Calendar.app/Contents/Extensions/CalendarFocusConfigurationExtension.appex/Contents/MacOS/CalendarFocusConfigurationExtension
  504 28078     1   0  9:52AM ??         0:00.06 /System/Applications/Mail.app/Contents/Extensions/MailShortcutsExtension.appex/Contents/MacOS/MailShortcutsExtension
  504 28082     1   0  9:52AM ??         0:01.00 /System/Library/CoreServices/Dock.app/Contents/XPCServices/DockHelper.xpc/Contents/MacOS/DockHelper
  504 28104     1   0  9:52AM ??         0:00.28 /System/Library/PrivateFrameworks/SafariSafeBrowsing.framework/com.apple.Safari.SafeBrowsing.Service
  504 28116     1   0  9:52AM ??         0:00.01 /System/Library/Frameworks/NetFS.framework/Versions/A/XPCServices/PlugInLibraryService.xpc/Contents/MacOS/PlugInLibraryService
  504 28118     1   0  9:52AM ??         0:00.02 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Versions/A/Support/mdwrite
   89 28262     1   0  9:52AM ??         0:00.25 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Versions/A/Support/mdworker -s mdworker-sizing -c MDSSizingWorker -m com.apple.mdworker.sizing
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  504 41442     1   0 11:20AM ??         0:01.56 /System/Library/PrivateFrameworks/NewsDaemon.framework/newsd
  504 41443     1   0 11:20AM ??         0:00.15 /System/Library/Frameworks/VideoToolbox.framework/Versions/A/XPCServices/VTDecoderXPCService.xpc/Contents/MacOS/VTDecoderXPCService
  504 41499     1   0 11:21AM ??         0:00.16 /System/Library/PrivateFrameworks/IntelligencePlatformCore.framework/Versions/A/intelligenceplatformd
  504 41704     1   0 11:22AM ??         0:00.15 /System/Library/Frameworks/Metal.framework/Versions/A/XPCServices/MTLCompilerService.xpc/Contents/MacOS/MTLCompilerService
  504 41785     1   0 11:23AM ??         0:00.02 /usr/bin/ssh-agent -l
  504 42527 27210   0 11:32AM ??         0:10.51 /Applications/Google Chrome.app/Contents/Frameworks/Google Chrome Framework.framework/Versions/120.0.6099.129/Helpers/Google Chrome Helper (Renderer).app/Contents/MacOS/Google Chrome Helper (Renderer) --type=renderer --extension-process --origin-trial-disabled-features=WebGPU --lang=en-US --num-raster-threads=4 --enable-zero-copy --enable-gpu-memory-buffer-compositor-resources --enable-main-frame-before-activation --renderer-client-id=259 --time-ticks-at-unix-epoch=-1703506631900517 --launch-time-ticks=198941084656 --shared-files --field-trial-handle=1718379636,r,6742120930418319793,9150852737802887181,262144 --variations-seed-version=20231218-080113.411000 --seatbelt-client=211
  504 42754     1   0 11:36AM ??         0:00.41 /System/Library/Frameworks/LocalAuthentication.framework/Support/coreautha.bundle/Contents/MacOS/coreautha
  504 52558     1   0 11:45AM ??         0:00.12 /System/Library/PrivateFrameworks/MessagesBlastDoorSupport.framework/Versions/A/XPCServices/MessagesBlastDoorService.xpc/Contents/MacOS/MessagesBlastDoorService
  504 52565     1   0 11:45AM ??         0:00.08 /System/Library/PrivateFrameworks/CoreRecents.framework/Versions/A/Support/recentsd
  504 52566     1   0 11:45AM ??         0:00.34 /System/Library/PrivateFrameworks/People.framework/peopled
  504 52567     1   0 11:45AM ??         0:00.09 /System/Library/PrivateFrameworks/CoreSuggestions.framework/Versions/A/Support/reversetemplated
  504 52594     1   0 11:45AM ??         0:00.01 /System/Library/Frameworks/AudioToolbox.framework/XPCServices/com.apple.audio.SandboxHelper.xpc/Contents/MacOS/com.apple.audio.SandboxHelper
  504 53067 27210   0 11:46AM ??         2:30.28 /Applications/Google Chrome.app/Contents/Frameworks/Google Chrome Framework.framework/Versions/120.0.6099.129/Helpers/Google Chrome Helper (Renderer).app/Contents/MacOS/Google Chrome Helper (Renderer) --type=renderer --origin-trial-disabled-features=WebGPU --lang=en-US --num-raster-threads=4 --enable-zero-copy --enable-gpu-memory-buffer-compositor-resources --enable-main-frame-before-activation --renderer-client-id=349 --time-ticks-at-unix-epoch=-1703506631900517 --launch-time-ticks=199769554444 --shared-files --field-trial-handle=1718379636,r,6742120930418319793,9150852737802887181,262144 --variations-seed-version=20231218-080113.411000 --seatbelt-client=214
  504 53530     1   0 11:52AM ??         0:00.04 /usr/libexec/backgroundassets.user
  504 53619     1   0 11:52AM ??         0:09.27 /System/Applications/App Store.app/Contents/MacOS/App Store
  504 53620     1   0 11:52AM ??         0:00.25 /System/Library/PrivateFrameworks/CommerceKit.framework/Versions/A/Resources/storeuid.app/Contents/MacOS/storeuid
  504 53621     1   0 11:52AM ??         0:00.86 /System/Library/PrivateFrameworks/GameCenterFoundation.framework/Versions/A/gamed
  504 53623     1   0 11:52AM ??         0:00.09 /System/Library/Frameworks/VideoToolbox.framework/Versions/A/XPCServices/VTDecoderXPCService.xpc/Contents/MacOS/VTDecoderXPCService
  504 53663     1   0 11:53AM ??         0:00.99 /System/Library/PrivateFrameworks/AuthKitUI.framework/Versions/A/XPCServices/AKAuthorizationRemoteViewService.xpc/Contents/MacOS/AKAuthorizationRemoteViewService
  504 53670     1   0 11:53AM ??         0:00.03 /System/Library/Frameworks/Metal.framework/Versions/A/XPCServices/MTLCompilerService.xpc/Contents/MacOS/MTLCompilerService
  504 53674     1   0 11:53AM ??         0:07.35 /System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent
  504 53675     1   0 11:53AM ??         0:00.06 /System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.Networking.xpc/Contents/MacOS/com.apple.WebKit.Networking
  504 53677     1   0 11:53AM ??         0:03.60 /System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.GPU.xpc/Contents/MacOS/com.apple.WebKit.GPU
  504 53685     1   0 11:53AM ??         0:00.49 /System/Library/PrivateFrameworks/PassKitCore.framework/passd
  504 53686     1   0 11:53AM ??         0:00.04 /System/Library/Frameworks/Metal.framework/Versions/A/XPCServices/MTLCompilerService.xpc/Contents/MacOS/MTLCompilerService
  504 53750     1   0 11:54AM ??         3:08.79 /Applications/Microsoft Remote Desktop.app/Contents/MacOS/Microsoft Remote Desktop
  504 53774     1   0 11:54AM ??         0:00.08 /System/Library/Frameworks/Metal.framework/Versions/A/XPCServices/MTLCompilerService.xpc/Contents/MacOS/MTLCompilerService
  504 53781     1   0 11:55AM ??         0:00.05 /System/Library/PrivateFrameworks/XprotectFramework.framework/Versions/A/XPCServices/XprotectService.xpc/Contents/MacOS/XprotectService
  504 53782     1   0 11:55AM ??         0:00.20 /System/Library/Frameworks/ApplicationServices.framework/Frameworks/PrintCore.framework/Versions/A/printtool
  504 53850     1   0 11:56AM ??         0:02.55 /System/Library/PrivateFrameworks/SafariPlatformSupport.framework/Versions/A/XPCServices/com.apple.SafariPlatformSupport.Helper.xpc/Contents/MacOS/com.apple.SafariPlatformSupport.Helper
  504 54097     1   0 11:58AM ??         0:00.05 /System/Cryptexes/App/usr/libexec/com.apple.Safari.History
  504 54099     1   0 11:58AM ??         0:00.28 /System/Library/PrivateFrameworks/LocalAuthenticationUI.framework/Versions/A/XPCServices/LocalAuthenticationRemoteService.xpc/Contents/MacOS/LocalAuthenticationRemoteService
  504 54103     1   0 11:58AM ??         0:00.04 /System/Library/Frameworks/Metal.framework/Versions/A/XPCServices/MTLCompilerService.xpc/Contents/MacOS/MTLCompilerService
  504 54124     1   0 11:59AM ??         0:00.03 /System/Library/Frameworks/PCSC.framework/Versions/A/XPCServices/com.apple.ctkpcscd.xpc/Contents/MacOS/com.apple.ctkpcscd
  504 54583     1   0 12:04PM ??         0:00.13 /System/Library/Frameworks/AppKit.framework/Versions/C/XPCServices/ThemeWidgetControlViewService.xpc/Contents/MacOS/ThemeWidgetControlViewService
  504 55011     1   0 12:10PM ??         0:00.17 /System/Library/Frameworks/QuickLook.framework/Versions/A/XPCServices/QuickLookSatellite.xpc/Contents/MacOS/QuickLookSatellite
  504 55703     1   0 12:15PM ??         0:00.06 /System/Library/Frameworks/VideoToolbox.framework/Versions/A/XPCServices/VTDecoderXPCService.xpc/Contents/MacOS/VTDecoderXPCService
  504 55980 27210   0 12:17PM ??         0:33.71 /Applications/Google Chrome.app/Contents/Frameworks/Google Chrome Framework.framework/Versions/120.0.6099.129/Helpers/Google Chrome Helper (Renderer).app/Contents/MacOS/Google Chrome Helper (Renderer) --type=renderer --origin-trial-disabled-features=WebGPU --lang=en-US --num-raster-threads=4 --enable-zero-copy --enable-gpu-memory-buffer-compositor-resources --enable-main-frame-before-activation --renderer-client-id=362 --time-ticks-at-unix-epoch=-1703506631900517 --launch-time-ticks=201604009404 --shared-files --field-trial-handle=1718379636,r,6742120930418319793,9150852737802887181,262144 --variations-seed-version=20231218-080113.411000 --seatbelt-client=211
  278 57552     1   0 Mon05PM ??         0:00.09 /System/Library/PrivateFrameworks/CoreSpeech.framework/Versions/A/XPCServices/CoreSpeechXPC.xpc/Contents/MacOS/CoreSpeechXPC
  504 57797 27210   0 12:39PM ??         0:01.37 /Applications/Google Chrome.app/Contents/Frameworks/Google Chrome Framework.framework/Versions/120.0.6099.129/Helpers/Google Chrome Helper (Renderer).app/Contents/MacOS/Google Chrome Helper (Renderer) --type=renderer --origin-trial-disabled-features=WebGPU --lang=en-US --num-raster-threads=4 --enable-zero-copy --enable-gpu-memory-buffer-compositor-resources --enable-main-frame-before-activation --renderer-client-id=376 --time-ticks-at-unix-epoch=-1703506631900517 --launch-time-ticks=202920416647 --shared-files --field-trial-handle=1718379636,r,6742120930418319793,9150852737802887181,262144 --variations-seed-version=20231218-080113.411000 --seatbelt-client=220
  504 63545     1   0 12:46PM ??         0:00.29 /System/Library/PrivateFrameworks/IMTransferServices.framework/IMTransferAgent.app/Contents/MacOS/IMTransferAgent
  278 67318     1   0 Sun11PM ??         0:00.12 /System/Library/PrivateFrameworks/MobileAccessoryUpdater.framework/XPCServices/EAUpdaterService.xpc/Contents/MacOS/EAUpdaterService
    0 67437     1   0 Sun11PM ??         0:00.64 /Library/Application Support/Citrix Receiver/ctxworkspaceupdater
  504 67972     1   0 12:51PM ??         0:00.42 /usr/libexec/tipsd
  504 68822     1   0  1:02PM ??         0:00.03 /Library/Apple/System/Library/CoreServices/XProtect.app/Contents/MacOS/XProtect
  504 69005     1   0  1:05PM ??         0:00.01 /Applications/Microsoft Remote Desktop.app/Contents/Frameworks/ClientShared.framework/Versions/A/XPCServices/pasteboard.xpc.xpc/Contents/MacOS/pasteboard.xpc
    0 69074     1   0 Sat11PM ??         0:00.03 /usr/libexec/tzd
    0 69126     1   0 Sat11PM ??         0:00.04 /System/Library/PrivateFrameworks/Noticeboard.framework/Versions/A/Resources/nbstated
  504 69368 27210   0  1:10PM ??         0:03.03 /Applications/Google Chrome.app/Contents/Frameworks/Google Chrome Framework.framework/Versions/120.0.6099.129/Helpers/Google Chrome Helper (Renderer).app/Contents/MacOS/Google Chrome Helper (Renderer) --type=renderer --origin-trial-disabled-features=WebGPU --lang=en-US --num-raster-threads=4 --enable-zero-copy --enable-gpu-memory-buffer-compositor-resources --enable-main-frame-before-activation --renderer-client-id=396 --time-ticks-at-unix-epoch=-1703506631900517 --launch-time-ticks=204819253729 --shared-files --field-trial-handle=1718379636,r,6742120930418319793,9150852737802887181,262144 --variations-seed-version=20231218-080113.411000 --seatbelt-client=212
  504 70416     1   0  1:21PM ??         0:00.44 /System/Library/PrivateFrameworks/MapsSync.framework/mapssyncd
    0 70886     1   0  1:39PM ??         0:00.05 /usr/sbin/cupsd -l
  504 71065     1   0  1:41PM ??         0:00.02 /System/Library/Frameworks/Metal.framework/Versions/A/XPCServices/MTLCompilerService.xpc/Contents/MacOS/MTLCompilerService
  504 71245 39730   0  1:42PM ??         0:00.24 /Applications/RStudio.app/Contents/Frameworks/RStudio Helper.app/Contents/MacOS/RStudio Helper --type=utility --utility-sub-type=audio.mojom.AudioService --lang=en-US --service-sandbox-type=audio --message-loop-type-ui --user-data-dir=/Users/huazhou/Library/Application Support/RStudio --shared-files --field-trial-handle=1718379636,r,14609628184229713530,7014257192654722631,262144 --disable-features=SpareRendererForSitePerProcess --seatbelt-client=79
  504 71246     1   0  1:42PM ??         0:00.02 /System/Library/Frameworks/AudioToolbox.framework/XPCServices/com.apple.audio.SandboxHelper.xpc/Contents/MacOS/com.apple.audio.SandboxHelper
  504 71716     1   0  1:46PM ??         0:00.15 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Versions/A/Support/mdworker_shared -s mdworker -c MDSImporterWorker -m com.apple.mdworker.shared
  504 72052     1   0  1:49PM ??         0:00.24 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Versions/A/Support/mdworker_shared -s mdworker -c MDSImporterWorker -m com.apple.mdworker.shared
  504 72109     1   0  1:49PM ??         0:00.50 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Versions/A/Support/mdworker_shared -s mdworker -c MDSImporterWorker -m com.apple.mdworker.shared
  504 72222     1   0  1:49PM ??         0:00.21 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Versions/A/Support/mdworker_shared -s mdworker -c MDSImporterWorker -m com.apple.mdworker.shared
  504 72888     1   0  1:50PM ??         0:00.10 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Versions/A/Support/mdworker_shared -s mdworker -c MDSImporterWorker -m com.apple.mdworker.shared
  504 72979 27210   0  1:50PM ??         0:00.03 /Applications/Google Chrome.app/Contents/Frameworks/Google Chrome Framework.framework/Versions/120.0.6099.129/Helpers/Google Chrome Helper (Renderer).app/Contents/MacOS/Google Chrome Helper (Renderer) --type=renderer --origin-trial-disabled-features=WebGPU --lang=en-US --num-raster-threads=4 --enable-zero-copy --enable-gpu-memory-buffer-compositor-resources --enable-main-frame-before-activation --renderer-client-id=430 --time-ticks-at-unix-epoch=-1703506631900517 --launch-time-ticks=206424304978 --shared-files --field-trial-handle=1718379636,r,6742120930418319793,9150852737802887181,262144 --variations-seed-version=20231218-080113.411000 --seatbelt-client=192
  504 73038 39747   0  1:50PM ??         0:00.00 /bin/bash /Applications/quarto/bin/quarto preview linux.qmd --to html --no-watch-inputs --no-browse
  504 73047 73038   0  1:50PM ??         0:00.75 /Applications/quarto/bin/tools/deno-aarch64-apple-darwin/deno run --unstable --no-config --cached-only --allow-read --allow-write --allow-run --allow-env --allow-net --allow-ffi --no-check --importmap=/Applications/quarto/bin/vendor/import_map.json /Applications/quarto/bin/quarto.js preview linux.qmd --to html --no-watch-inputs --no-browse
  504 73048 73047   0  1:50PM ??         0:00.39 /Library/Frameworks/R.framework/Resources/bin/exec/R --no-echo --no-restore --file=/Applications/quarto/share/rmd/rmd.R
  504 73162 73048   0  1:50PM ??         0:00.00 sh -c 'bash'  -c 'ps -eaf' 2>&1
    0 73163 73162   0  1:50PM ??         0:00.00 ps -eaf
    0 76120     1   0 11:02PM ??         0:00.01 /usr/libexec/periodic-wrapper weekly
  257 76137     1   0 11:02PM ??         0:00.08 /usr/libexec/DataDetectorsSourceAccess
  247 86607     1   0 Sun03AM ??         0:00.08 /System/Library/PrivateFrameworks/GameControllerFoundation.framework/Versions/A/XPCServices/GameControllerConfigService.xpc/Contents/MacOS/GameControllerConfigService
    0 86813     1   0 Sun04AM ??         0:00.03 /usr/libexec/microstackshot
    0 96520     1   0  5:02AM ??         0:40.03 /usr/libexec/PerfPowerServices
    0 38078 27225   0 11:08AM ttys000    0:00.01 login -pf huazhou
  504 38079 38078   0 11:08AM ttys000    0:00.05 -zsh
  504 41784 38079   0 11:23AM ttys000    0:00.08 ssh huazhou@hoffman2.idre.ucla.edu
  504 71201 39747   0  1:42PM ttys001    0:00.02 bash --rcfile /Applications/RStudio.app/Contents/Resources/app/resources/terminal/bash/.bash_profile
  • All Python processes:
ps -eaf | grep python
  504 27688 27537   0  9:51AM ??         0:00.03 /Applications/Box.app/Contents/MacOS/python -B -c from multiprocessing.resource_tracker import main;main(31)
  504 73164 73048   0  1:50PM ??         0:00.00 sh -c 'bash'  -c 'ps -eaf | grep python' 2>&1
  504 73165 73164   0  1:50PM ??         0:00.00 bash -c ps -eaf | grep python
  504 73167 73165   0  1:50PM ??         0:00.00 grep python
  • Process with PID=1:
ps -fp 1
  UID   PID  PPID   C STIME   TTY           TIME CMD
    0     1     0   0 Sat10AM ??        53:42.69 /sbin/launchd
  • All processes owned by a user:
ps -fu $USER
  UID   PID  PPID   C STIME   TTY           TIME CMD
  504  1176     1   0 Sat11AM ??        46:00.79 /usr/sbin/distnoted agent
  504  1225     1   0 Sat11AM ??         1:40.21 /usr/sbin/cfprefsd agent
  504  1254     1   0 Sat11AM ??         0:37.58 /usr/libexec/lsd
  504  1288     1   0 Sat11AM ??         0:00.02 /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonCore.framework/Versions/A/XPCServices/csnameddatad.xpc/Contents/MacOS/csnameddatad
  504  1317     1   0 Sat11AM ??         2:40.86 /usr/libexec/trustd --agent
  504  1330     1   0 Sat11AM ??         0:21.03 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Versions/A/Support/mdbulkimport -s mdworker-bundle -c MDSImporterBundleFinder -m com.apple.metadata.mdbulkimport
  504  1592     1   0 Sat11AM ??         0:09.81 /usr/libexec/pkd
  504  2026     1   0 Sat11AM ??         0:00.64 /System/Library/Frameworks/Security.framework/Versions/A/XPCServices/TrustedPeersHelper.xpc/Contents/MacOS/TrustedPeersHelper
  504  2058     1   0 Sat11AM ??         0:18.70 /usr/libexec/secinitd
  504  2072     1   0 Sat11AM ??         0:11.78 /usr/libexec/containermanagerd --runmode=agent --user-container-mode=current --bundle-container-mode=proxy --system-container-mode=none
  504  2077     1   0 Sat11AM ??         0:04.01 /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/XPCServices/com.apple.hiservices-xpcservice.xpc/Contents/MacOS/com.apple.hiservices-xpcservice
  504  2080     1   0 Sat11AM ??         0:01.45 /System/Library/Frameworks/CryptoTokenKit.framework/ctkd -tw
  504  2082     1   0 Sat11AM ??         0:01.40 /System/Library/Frameworks/LocalAuthentication.framework/Support/coreauthd
  504  2111     1   0 Sat11AM ??         0:10.56 /System/Library/PrivateFrameworks/GeoServices.framework/Versions/A/XPCServices/com.apple.geod.xpc/Contents/MacOS/com.apple.geod
  504  2199     1   0 Sat11AM ??         0:00.01 /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/DictionaryServices.framework/Versions/A/XPCServices/com.apple.DictionaryServiceHelper.xpc/Contents/MacOS/com.apple.DictionaryServiceHelper
  504  2207     1   0 Sat11AM ??         0:01.31 /System/Library/PrivateFrameworks/ContextKit.framework/Versions/A/XPCServices/ContextService.xpc/Contents/MacOS/ContextService
  504  2411     1   0 Sat11AM ??         0:00.33 /System/Library/PrivateFrameworks/CloudPhotoServices.framework/Versions/A/XPCServices/com.apple.CloudPhotosConfiguration.xpc/Contents/MacOS/com.apple.CloudPhotosConfiguration
  504  2457     1   0 Sat11AM ??         1:25.13 /System/Library/PrivateFrameworks/TextInputUIMacHelper.framework/Versions/A/XPCServices/CursorUIViewService.xpc/Contents/MacOS/CursorUIViewService
  504  2644     1   0 Sat11AM ??         0:00.17 /System/Library/Frameworks/MediaAccessibility.framework/Versions/A/XPCServices/com.apple.accessibility.mediaaccessibilityd.xpc/Contents/MacOS/com.apple.accessibility.mediaaccessibilityd
  504  4262     1   0 Sat11AM ??         0:00.04 /System/Library/PrivateFrameworks/PodcastServices.framework/XPCServices/PodcastContentService.xpc/Contents/MacOS/PodcastContentService
  504  4264     1   0 Sat11AM ??         0:00.05 /System/Library/PrivateFrameworks/BookKit.framework/Versions/A/XPCServices/com.apple.BKAgentService.xpc/Contents/MacOS/com.apple.BKAgentService
  504 18172     1   0 Sat11AM ??         0:00.02 /System/Library/PrivateFrameworks/ToneLibrary.framework/Versions/A/XPCServices/com.apple.tonelibraryd.xpc/Contents/MacOS/com.apple.tonelibraryd
  504 20950     1   0 Sat12PM ??         0:00.11 /System/Library/PrivateFrameworks/DistributedEvaluation.framework/Versions/A/XPCServices/com.apple.siri-distributed-evaluation.xpc/Contents/MacOS/com.apple.siri-distributed-evaluation
  504 26870     1   0  9:51AM ??         0:11.50 /Library/Application Support/Adobe/Adobe Desktop Common/IPCBox/AdobeIPCBroker.app/Contents/MacOS/AdobeIPCBroker -launchedbyvulcan /Applications/Utilities/Adobe Creative Cloud/ACC/Creative Cloud.app/Contents/MacOS/Creative Cloud
  504 26871     1   0  9:51AM ??         0:05.72 /System/Library/PrivateFrameworks/FileProvider.framework/Support/fileproviderd
  504 27188     1   0  9:51AM ??         0:02.30 /usr/libexec/UserEventAgent (Aqua)
  504 27190     1   0  9:51AM ??         0:00.86 /usr/libexec/bluetoothuserd
  504 27192     1   0  9:51AM ??         0:04.13 /System/Library/CoreServices/ControlCenter.app/Contents/MacOS/ControlCenter
  504 27193     1   0  9:51AM ??         0:10.48 /System/Library/PrivateFrameworks/CoreDuetContext.framework/Resources/ContextStoreAgent
  504 27194     1   0  9:51AM ??         0:00.31 /System/Library/CoreServices/CoreServicesUIAgent.app/Contents/MacOS/CoreServicesUIAgent
  504 27195     1   0  9:51AM ??         0:01.02 /usr/sbin/universalaccessd launchd -s
  504 27196     1   0  9:51AM ??         0:00.02 /System/Library/PrivateFrameworks/CloudServices.framework/Helpers/com.apple.sbd
  504 27199     1   0  9:51AM ??         0:00.18 /System/Library/PrivateFrameworks/BackgroundTaskManagement.framework/Support/BackgroundTaskManagementAgent.app/Contents/MacOS/BackgroundTaskManagementAgent
  504 27200     1   0  9:51AM ??         0:00.10 /System/Library/PrivateFrameworks/UserNotificationsCore.framework/Support/usernotificationsd
  504 27201     1   0  9:51AM ??         0:06.06 /usr/libexec/ContinuityCaptureAgent server
  504 27202     1   0  9:51AM ??         0:03.13 /System/Library/Frameworks/Accounts.framework/Versions/A/Support/accountsd
  504 27203     1   0  9:51AM ??         0:00.02 /System/Library/PrivateFrameworks/CoreFollowUp.framework/Versions/A/Support/followupd
  504 27204     1   0  9:51AM ??         0:00.80 /System/Library/PrivateFrameworks/VoiceShortcuts.framework/Versions/A/Support/siriactionsd
  504 27205     1   0  9:51AM ??         0:00.87 /System/Library/PrivateFrameworks/SyncedDefaults.framework/Support/syncdefaultsd
  504 27206     1   0  9:51AM ??         0:00.63 /usr/sbin/usernoted
  504 27207     1   0  9:51AM ??         0:00.28 /System/Library/CoreServices/CoreLocationAgent.app/Contents/MacOS/CoreLocationAgent
  504 27208     1   0  9:51AM ??         0:01.00 /System/Library/PrivateFrameworks/CalendarDaemon.framework/Support/calaccessd
  504 27209     1   0  9:51AM ??         0:00.60 /usr/libexec/pboard
  504 27210     1   0  9:51AM ??         7:29.56 /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
  504 27211     1   0  9:51AM ??         0:00.37 /System/Library/PrivateFrameworks/CloudDocsDaemon.framework/Versions/A/Support/bird
  504 27212     1   0  9:51AM ??         0:28.07 /Applications/WhatsApp.app/Contents/MacOS/WhatsApp
  504 27213     1   0  9:51AM ??         0:00.31 /System/Library/Frameworks/CoreTelephony.framework/Support/CommCenter -L
  504 27214     1   0  9:51AM ??         0:00.02 /System/Library/CoreServices/APFSUserAgent
  504 27216     1   0  9:51AM ??         0:03.71 /usr/libexec/nsurlsessiond
  504 27218     1   0  9:51AM ??         0:03.11 /usr/libexec/rapportd
  504 27219     1   0  9:51AM ??         0:00.44 /System/Library/CoreServices/ControlStrip.app/Contents/MacOS/ControlStrip
  504 27220     1   0  9:51AM ??         0:06.06 /usr/libexec/routined LAUNCHED_BY_LAUNCHD
  504 27221     1   0  9:51AM ??         0:00.29 /System/Library/PrivateFrameworks/MobileDevice.framework/Resources/MobileDeviceUpdater.app/Contents/MacOS/MobileDeviceUpdater
  504 27223     1   0  9:51AM ??         0:03.27 /System/Library/PrivateFrameworks/TCC.framework/Support/tccd
  504 27224     1   0  9:51AM ??         0:04.80 /System/Library/CoreServices/WiFiAgent.app/Contents/MacOS/WiFiAgent
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  504 27234     1   0  9:51AM ??         2:19.66 /Applications/Adobe Acrobat DC/Adobe Acrobat.app/Contents/MacOS/AdobeAcrobat
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  504 27251     1   0  9:51AM ??         0:00.02 /Applications/Google Chrome.app/Contents/Frameworks/Google Chrome Framework.framework/Versions/120.0.6099.129/Helpers/chrome_crashpad_handler --monitor-self-annotation=ptype=crashpad-handler --database=/Users/huazhou/Library/Application Support/Google/Chrome/Crashpad --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=OS X --annotation=prod=Chrome_Mac --annotation=ver=120.0.6099.129 --handshake-fd=6
  504 27252     1   0  9:51AM ??         0:00.41 /System/Library/PrivateFrameworks/HearingCore.framework/heard
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  504 27254     1   0  9:51AM ??         0:07.81 /System/Library/PrivateFrameworks/ChronoCore.framework/Support/chronod
  504 27255     1   0  9:51AM ??         0:00.63 /System/Library/CoreServices/iconservicesagent
  504 27256     1   0  9:51AM ??         0:00.35 /usr/libexec/intelligentroutingd
  504 27257     1   0  9:51AM ??         0:00.07 /System/Library/Frameworks/InputMethodKit.framework/Resources/imklaunchagent
  504 27258     1   0  9:51AM ??         0:01.27 /System/Library/PrivateFrameworks/ViewBridge.framework/Versions/A/XPCServices/ViewBridgeAuxiliary.xpc/Contents/MacOS/ViewBridgeAuxiliary
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  504 27269     1   0  9:51AM ??         0:00.12 /System/Library/Frameworks/AudioToolbox.framework/XPCServices/CarbonComponentScannerXPC.xpc/Contents/MacOS/CarbonComponentScannerXPC
  504 27270 27210   0  9:51AM ??         5:02.49 /Applications/Google Chrome.app/Contents/Frameworks/Google Chrome Framework.framework/Versions/120.0.6099.129/Helpers/Google Chrome Helper (GPU).app/Contents/MacOS/Google Chrome Helper (GPU) --type=gpu-process --gpu-preferences=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 --shared-files --field-trial-handle=1718379636,r,6742120930418319793,9150852737802887181,262144 --variations-seed-version=20231218-080113.411000 --seatbelt-client=27
  504 27271 27210   0  9:51AM ??         1:19.18 /Applications/Google Chrome.app/Contents/Frameworks/Google Chrome Framework.framework/Versions/120.0.6099.129/Helpers/Google Chrome Helper.app/Contents/MacOS/Google Chrome Helper --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --shared-files --field-trial-handle=1718379636,r,6742120930418319793,9150852737802887181,262144 --variations-seed-version=20231218-080113.411000 --seatbelt-client=27
  504 27273     1   0  9:51AM ??         0:14.15 /usr/libexec/sharingd
  504 27274 27210   0  9:51AM ??         0:02.11 /Applications/Google Chrome.app/Contents/Frameworks/Google Chrome Framework.framework/Versions/120.0.6099.129/Helpers/Google Chrome Helper.app/Contents/MacOS/Google Chrome Helper --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --shared-files --field-trial-handle=1718379636,r,6742120930418319793,9150852737802887181,262144 --variations-seed-version=20231218-080113.411000 --seatbelt-client=35
  504 27276     1   0  9:51AM ??         0:00.77 /System/Library/Input Methods/EmojiFunctionRowIM.app/Contents/PlugIns/EmojiFunctionRowIM_Extension.appex/Contents/MacOS/EmojiFunctionRowIM_Extension -AppleLanguages ("en-US", "zh-Hans-US")
  504 27277     1   0  9:51AM ??         0:05.20 /System/Library/Frameworks/ApplicationServices.framework/Frameworks/ATS.framework/Support/fontd
  504 27278     1   0  9:51AM ??         0:00.62 /System/Library/PrivateFrameworks/AuthKit.framework/Versions/A/Support/akd
  504 27279     1   0  9:51AM ??         0:00.34 /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ATS.framework/Versions/A/Support/fontworker
  504 27280     1   0  9:51AM ??         0:00.01 /System/Library/Frameworks/ColorSync.framework/Versions/A/XPCServices/com.apple.ColorSyncXPCAgent.xpc/Contents/MacOS/com.apple.ColorSyncXPCAgent
  504 27281     1   0  9:51AM ??         0:00.13 /System/Library/PrivateFrameworks/CoreCDP.framework/Versions/A/Resources/cdpd
  504 27282     1   0  9:51AM ??         0:00.74 /System/Library/CoreServices/UIKitSystem.app/Contents/MacOS/UIKitSystem system_app_start
  504 27285     1   0  9:51AM ??         0:00.02 /System/Library/Frameworks/ManagedSettings.framework/Versions/A/ManagedSettingsAgent
  504 27286     1   0  9:51AM ??         0:00.01 /Library/Apple/System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/XPCServices/MDRemoteServiceSupport.xpc/Contents/MacOS/MDRemoteServiceSupport
  504 27287     1   0  9:51AM ??         0:00.19 /System/Library/PrivateFrameworks/FamilyCircle.framework/Versions/A/Resources/familycircled
  504 27288     1   0  9:51AM ??         0:00.39 /System/Library/PrivateFrameworks/StatusKit.framework/StatusKitAgent
  504 27289     1   0  9:51AM ??         0:00.06 /System/Library/PrivateFrameworks/IntlPreferences.framework/Support/localizationswitcherd
  504 27290     1   0  9:51AM ??         0:06.81 /System/Library/Frameworks/Contacts.framework/Support/contactsd
  504 27291     1   0  9:51AM ??         0:02.21 /System/Library/PrivateFrameworks/IMCore.framework/imagent.app/Contents/MacOS/imagent
  504 27292     1   0  9:51AM ??         0:00.77 /System/Library/Frameworks/ExtensionFoundation.framework/Versions/A/XPCServices/extensionkitservice.xpc/Contents/MacOS/extensionkitservice
  504 27293     1   0  9:51AM ??         0:00.89 /System/Applications/Calendar.app/Contents/PlugIns/CalendarWidgetExtension.appex/Contents/MacOS/CalendarWidgetExtension
  504 27294     1   0  9:51AM ??         0:00.68 /usr/libexec/networkserviceproxy
  504 27295     1   0  9:51AM ??         0:07.18 /System/Applications/Weather.app/Contents/PlugIns/WeatherWidget.appex/Contents/MacOS/WeatherWidget
  504 27296     1   0  9:51AM ??         0:00.30 /usr/libexec/fmfd
  504 27299 27210   0  9:51AM ??         0:05.47 /Applications/Google Chrome.app/Contents/Frameworks/Google Chrome Framework.framework/Versions/120.0.6099.129/Helpers/Google Chrome Helper (Renderer).app/Contents/MacOS/Google Chrome Helper (Renderer) --type=renderer --extension-process --origin-trial-disabled-features=WebGPU --lang=en-US --num-raster-threads=4 --enable-zero-copy --enable-gpu-memory-buffer-compositor-resources --enable-main-frame-before-activation --renderer-client-id=6 --time-ticks-at-unix-epoch=-1703506631900517 --launch-time-ticks=192874228792 --shared-files --field-trial-handle=1718379636,r,6742120930418319793,9150852737802887181,262144 --variations-seed-version=20231218-080113.411000 --seatbelt-client=80
  504 27300     1   0  9:51AM ??         0:02.42 /System/Applications/Clock.app/Contents/PlugIns/WorldClockWidget.appex/Contents/MacOS/WorldClockWidget
  504 27301     1   0  9:51AM ??         0:00.53 /System/Library/Frameworks/QuickLookThumbnailing.framework/Support/com.apple.quicklook.ThumbnailsAgent
  504 27302     1   0  9:51AM ??         0:11.10 /System/Applications/News.app/Contents/PlugIns/NewsToday2.appex/Contents/MacOS/NewsToday2
  504 27303     1   0  9:51AM ??         0:00.06 /System/Cryptexes/App/usr/libexec/SafariLaunchAgent
  504 27304     1   0  9:51AM ??         0:01.11 /System/Library/CoreServices/Spotlight.app/Contents/MacOS/Spotlight
  504 27305     1   0  9:51AM ??         0:00.02 /System/Library/PrivateFrameworks/CSExattrCrypto.framework/Versions/A/XPCServices/CSExattrCryptoService.xpc/Contents/MacOS/CSExattrCryptoService
  504 27307     1   0  9:51AM ??         0:14.63 /System/Library/PrivateFrameworks/IMDPersistence.framework/XPCServices/IMDPersistenceAgent.xpc/Contents/MacOS/IMDPersistenceAgent
  504 27308     1   0  9:51AM ??         0:00.03 /System/Library/PrivateFrameworks/TelephonyUtilities.framework/XPCServices/com.apple.FaceTime.FTConversationService.xpc/Contents/MacOS/com.apple.FaceTime.FTConversationService
  504 27309     1   0  9:51AM ??         0:08.53 /System/Applications/Stocks.app/Contents/PlugIns/StocksWidget.appex/Contents/MacOS/StocksWidget
  504 27310     1   0  9:51AM ??         0:13.29 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Versions/A/Support/corespotlightd
  504 27311     1   0  9:51AM ??         0:00.45 /System/Library/PrivateFrameworks/CoreParsec.framework/parsecd
  504 27312 27210   0  9:51AM ??         0:17.63 /Applications/Google Chrome.app/Contents/Frameworks/Google Chrome Framework.framework/Versions/120.0.6099.129/Helpers/Google Chrome Helper (Renderer).app/Contents/MacOS/Google Chrome Helper (Renderer) --type=renderer --extension-process --origin-trial-disabled-features=WebGPU --lang=en-US --num-raster-threads=4 --enable-zero-copy --enable-gpu-memory-buffer-compositor-resources --enable-main-frame-before-activation --renderer-client-id=11 --time-ticks-at-unix-epoch=-1703506631900517 --launch-time-ticks=192874410539 --shared-files --field-trial-handle=1718379636,r,6742120930418319793,9150852737802887181,262144 --variations-seed-version=20231218-080113.411000 --seatbelt-client=80
  504 27318     1   0  9:51AM ??         0:00.21 /System/Library/PrivateFrameworks/ScreenTimeCore.framework/Versions/A/ScreenTimeAgent
  504 27320     1   0  9:51AM ??         0:00.42 /System/Library/PrivateFrameworks/CommerceKit.framework/Versions/A/Resources/commerce
  504 27321     1   0  9:51AM ??         0:02.06 /System/Library/PrivateFrameworks/UserActivity.framework/Agents/useractivityd
  504 27322     1   0  9:51AM ??         0:00.03 /System/Library/PrivateFrameworks/MediaRemote.framework/Support/mediaremoteagent
  504 27323     1   0  9:51AM ??         0:00.26 /System/Library/PrivateFrameworks/iCloudNotification.framework/iCloudNotificationAgent
  504 27324     1   0  9:51AM ??         0:00.52 /System/Library/CoreServices/pbs
  504 27326     1   0  9:51AM ??         0:00.21 /usr/libexec/avconferenced
  504 27327     1   0  9:51AM ??         0:00.16 /usr/libexec/WiFiVelocityAgent
  504 27328     1   0  9:51AM ??         0:02.52 /usr/libexec/triald
  504 27329     1   0  9:51AM ??         0:00.30 /System/Library/PrivateFrameworks/iTunesCloud.framework/Support/itunescloudd
  504 27330     1   0  9:51AM ??         0:06.49 /System/Library/PrivateFrameworks/CacheDelete.framework/deleted
  504 27333     1   0  9:51AM ??         0:00.61 /System/Library/Frameworks/QuickLookThumbnailing.framework/Versions/A/PlugIns/ThumbnailExtension_macOS.appex/Contents/MacOS/ThumbnailExtension_macOS -AppleLanguages ("en-US", "zh-Hans-US")
  504 27334     1   0  9:51AM ??         0:00.76 /System/Library/PrivateFrameworks/AppleMediaServices.framework/Resources/amsaccountsd
  504 27335     1   0  9:51AM ??         0:02.30 /System/Library/PrivateFrameworks/AppleMediaServicesUI.framework/amsengagementd
  504 27336     1   0  9:51AM ??         0:00.56 /System/Library/PrivateFrameworks/AssistantServices.framework/Versions/A/Support/assistantd
  504 27337     1   0  9:51AM ??         0:01.42 /usr/libexec/knowledge-agent
  504 27339     1   0  9:51AM ??         0:00.08 /System/Library/PrivateFrameworks/ContinuousDialogManagerService.framework/assistant_cdmd
  504 27340     1   0  9:51AM ??         0:00.01 /System/Library/Frameworks/NetFS.framework/Versions/A/XPCServices/PlugInLibraryService.xpc/Contents/MacOS/PlugInLibraryService
  504 27341     1   0  9:51AM ??         0:01.11 /usr/libexec/swcd
  504 27342 27212   0  9:51AM ??         0:00.00 <defunct>
  504 27344     1   0  9:51AM ??         0:00.04 /System/Applications/Home.app/Contents/PlugIns/HomeWidgetLockScreen.appex/Contents/MacOS/HomeWidgetLockScreen
  504 27345     1   0  9:51AM ??         0:00.10 /System/Applications/Stocks.app/Contents/PlugIns/StocksDetailIntents.appex/Contents/MacOS/StocksDetailIntents -AppleLanguages ("en-US", "zh-Hans-US")
  504 27346     1   0  9:51AM ??         0:00.04 /usr/libexec/metrickitd
  504 27351     1   0  9:51AM ??         0:00.08 /System/Applications/FindMy.app/Contents/PlugIns/FindMyWidgetItems.appex/Contents/MacOS/FindMyWidgetItems
  504 27352     1   0  9:51AM ??         0:00.01 /System/Library/Frameworks/ExtensionFoundation.framework/Versions/A/XPCServices/extensionkitservice.xpc/Contents/MacOS/extensionkitservice
  504 27354     1   0  9:51AM ??         0:02.27 /System/Library/ExtensionKit/Extensions/WallpaperVideoExtension.appex/Contents/MacOS/WallpaperVideoExtension
  504 27355     1   0  9:51AM ??         0:00.14 /System/Applications/Reminders.app/Contents/PlugIns/RemindersWidgetExtension.appex/Contents/MacOS/RemindersWidgetExtension
  504 27356     1   0  9:51AM ??         0:00.05 /System/Applications/FindMy.app/Contents/PlugIns/FindMyWidgetIntentsItems.appex/Contents/MacOS/FindMyWidgetIntentsItems -AppleLanguages ("en-US", "zh-Hans-US")
  504 27357     1   0  9:51AM ??         0:00.19 /System/Applications/Notes.app/Contents/PlugIns/com.apple.Notes.WidgetExtension.appex/Contents/MacOS/com.apple.Notes.WidgetExtension
  504 27358     1   0  9:51AM ??         0:00.23 /System/Library/Frameworks/VideoToolbox.framework/Versions/A/XPCServices/VTDecoderXPCService.xpc/Contents/MacOS/VTDecoderXPCService
  504 27359     1   0  9:51AM ??         0:00.19 /System/Volumes/Preboot/Cryptexes/App/System/Applications/Safari.app/Contents/Extensions/SafariWidgetExtension.appex/Contents/MacOS/SafariWidgetExtension
  504 27360     1   0  9:51AM ??         0:00.11 /System/Applications/Home.app/Contents/PlugIns/HomeWidget.appex/Contents/MacOS/HomeWidget
  504 27361     1   0  9:51AM ??         0:00.16 /System/Applications/Shortcuts.app/Contents/PlugIns/ShortcutsWidgetExtension.appex/Contents/MacOS/ShortcutsWidgetExtension
  504 27363     1   0  9:51AM ??         0:00.08 /System/Applications/Reminders.app/Contents/PlugIns/RemindersIntentsExtension.appex/Contents/MacOS/RemindersIntentsExtension -AppleLanguages ("en-US", "zh-Hans-US")
  504 27364     1   0  9:51AM ??         0:03.08 /usr/libexec/searchpartyuseragent
  504 27365     1   0  9:51AM ??         0:00.26 /System/Applications/Home.app/Contents/PlugIns/HomeEnergyWidgetsExtension.appex/Contents/MacOS/HomeEnergyWidgetsExtension
  504 27367     1   0  9:51AM ??         0:00.08 /System/Applications/Notes.app/Contents/PlugIns/com.apple.Notes.IntentsExtension.appex/Contents/MacOS/com.apple.Notes.IntentsExtension -AppleLanguages ("en-US", "zh-Hans-US")
  504 27369     1   0  9:51AM ??         0:00.09 /System/Applications/FindMy.app/Contents/PlugIns/FindMyWidgetPeople.appex/Contents/MacOS/FindMyWidgetPeople
  504 27370     1   0  9:51AM ??         0:00.72 /System/Library/CoreServices/Dock.app/Contents/XPCServices/com.apple.dock.extra.xpc/Contents/MacOS/com.apple.dock.extra
  504 27371     1   0  9:51AM ??         0:00.13 /System/Applications/News.app/Contents/PlugIns/NewsTag.appex/Contents/MacOS/NewsTag
  504 27372     1   0  9:51AM ??         0:00.76 /System/Library/PrivateFrameworks/Synapse.framework/Support/contentlinkingd
  504 27373     1   0  9:51AM ??         0:01.05 /System/Library/CoreServices/Screen Time.app/Contents/PlugIns/ScreenTimeWidgetExtension.appex/Contents/MacOS/ScreenTimeWidgetExtension
  504 27374     1   0  9:51AM ??         0:00.02 /System/Library/PrivateFrameworks/CalendarWidget.framework/PlugIns/IntentsExtension.appex/Contents/MacOS/IntentsExtension -AppleLanguages ("en-US", "zh-Hans-US")
  504 27375     1   0  9:51AM ??         0:00.16 /usr/libexec/findmylocateagent
  504 27378     1   0  9:51AM ??         0:00.01 /System/Library/Frameworks/Intents.framework/XPCServices/intents_helper.xpc/Contents/MacOS/intents_helper
  504 27379     1   0  9:51AM ??         0:00.29 /System/Applications/Podcasts.app/Contents/PlugIns/PodcastsWidget.appex/Contents/MacOS/PodcastsWidget
  504 27380     1   0  9:51AM ??         0:00.64 /System/Library/CoreServices/PeopleViewService.app/Contents/PlugIns/PeopleWidget_macOSExtension.appex/Contents/MacOS/PeopleWidget_macOSExtension
  504 27381     1   0  9:51AM ??         0:00.01 /System/Library/CoreServices/ReportCrash agent
  504 27382     1   0  9:51AM ??         0:00.01 /System/Library/Frameworks/Intents.framework/XPCServices/intents_helper.xpc/Contents/MacOS/intents_helper
  504 27383     1   0  9:51AM ??         0:00.33 /System/Applications/FindMy.app/Contents/PlugIns/FindMyWidgetIntentsPeople.appex/Contents/MacOS/FindMyWidgetIntentsPeople -AppleLanguages ("en-US", "zh-Hans-US")
  504 27384     1   0  9:51AM ??         0:00.15 /System/Library/PrivateFrameworks/CallHistory.framework/Support/CallHistoryPluginHelper
  504 27385     1   0  9:51AM ??         0:00.13 /System/Library/CoreServices/Tips.app/Contents/PlugIns/TipsWidget.appex/Contents/MacOS/TipsWidget
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  504 53670     1   0 11:53AM ??         0:00.03 /System/Library/Frameworks/Metal.framework/Versions/A/XPCServices/MTLCompilerService.xpc/Contents/MacOS/MTLCompilerService
  504 53674     1   0 11:53AM ??         0:07.35 /System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent
  504 53675     1   0 11:53AM ??         0:00.06 /System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.Networking.xpc/Contents/MacOS/com.apple.WebKit.Networking
  504 53677     1   0 11:53AM ??         0:03.60 /System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.GPU.xpc/Contents/MacOS/com.apple.WebKit.GPU
  504 53685     1   0 11:53AM ??         0:00.49 /System/Library/PrivateFrameworks/PassKitCore.framework/passd
  504 53686     1   0 11:53AM ??         0:00.04 /System/Library/Frameworks/Metal.framework/Versions/A/XPCServices/MTLCompilerService.xpc/Contents/MacOS/MTLCompilerService
  504 53750     1   0 11:54AM ??         3:08.79 /Applications/Microsoft Remote Desktop.app/Contents/MacOS/Microsoft Remote Desktop
  504 53774     1   0 11:54AM ??         0:00.08 /System/Library/Frameworks/Metal.framework/Versions/A/XPCServices/MTLCompilerService.xpc/Contents/MacOS/MTLCompilerService
  504 53781     1   0 11:55AM ??         0:00.05 /System/Library/PrivateFrameworks/XprotectFramework.framework/Versions/A/XPCServices/XprotectService.xpc/Contents/MacOS/XprotectService
  504 53782     1   0 11:55AM ??         0:00.20 /System/Library/Frameworks/ApplicationServices.framework/Frameworks/PrintCore.framework/Versions/A/printtool
  504 53850     1   0 11:56AM ??         0:02.55 /System/Library/PrivateFrameworks/SafariPlatformSupport.framework/Versions/A/XPCServices/com.apple.SafariPlatformSupport.Helper.xpc/Contents/MacOS/com.apple.SafariPlatformSupport.Helper
  504 54097     1   0 11:58AM ??         0:00.05 /System/Cryptexes/App/usr/libexec/com.apple.Safari.History
  504 54099     1   0 11:58AM ??         0:00.28 /System/Library/PrivateFrameworks/LocalAuthenticationUI.framework/Versions/A/XPCServices/LocalAuthenticationRemoteService.xpc/Contents/MacOS/LocalAuthenticationRemoteService
  504 54103     1   0 11:58AM ??         0:00.04 /System/Library/Frameworks/Metal.framework/Versions/A/XPCServices/MTLCompilerService.xpc/Contents/MacOS/MTLCompilerService
  504 54124     1   0 11:59AM ??         0:00.03 /System/Library/Frameworks/PCSC.framework/Versions/A/XPCServices/com.apple.ctkpcscd.xpc/Contents/MacOS/com.apple.ctkpcscd
  504 54583     1   0 12:04PM ??         0:00.13 /System/Library/Frameworks/AppKit.framework/Versions/C/XPCServices/ThemeWidgetControlViewService.xpc/Contents/MacOS/ThemeWidgetControlViewService
  504 55011     1   0 12:10PM ??         0:00.17 /System/Library/Frameworks/QuickLook.framework/Versions/A/XPCServices/QuickLookSatellite.xpc/Contents/MacOS/QuickLookSatellite
  504 55703     1   0 12:15PM ??         0:00.06 /System/Library/Frameworks/VideoToolbox.framework/Versions/A/XPCServices/VTDecoderXPCService.xpc/Contents/MacOS/VTDecoderXPCService
  504 55980 27210   0 12:17PM ??         0:33.71 /Applications/Google Chrome.app/Contents/Frameworks/Google Chrome Framework.framework/Versions/120.0.6099.129/Helpers/Google Chrome Helper (Renderer).app/Contents/MacOS/Google Chrome Helper (Renderer) --type=renderer --origin-trial-disabled-features=WebGPU --lang=en-US --num-raster-threads=4 --enable-zero-copy --enable-gpu-memory-buffer-compositor-resources --enable-main-frame-before-activation --renderer-client-id=362 --time-ticks-at-unix-epoch=-1703506631900517 --launch-time-ticks=201604009404 --shared-files --field-trial-handle=1718379636,r,6742120930418319793,9150852737802887181,262144 --variations-seed-version=20231218-080113.411000 --seatbelt-client=211
  504 57797 27210   0 12:39PM ??         0:01.37 /Applications/Google Chrome.app/Contents/Frameworks/Google Chrome Framework.framework/Versions/120.0.6099.129/Helpers/Google Chrome Helper (Renderer).app/Contents/MacOS/Google Chrome Helper (Renderer) --type=renderer --origin-trial-disabled-features=WebGPU --lang=en-US --num-raster-threads=4 --enable-zero-copy --enable-gpu-memory-buffer-compositor-resources --enable-main-frame-before-activation --renderer-client-id=376 --time-ticks-at-unix-epoch=-1703506631900517 --launch-time-ticks=202920416647 --shared-files --field-trial-handle=1718379636,r,6742120930418319793,9150852737802887181,262144 --variations-seed-version=20231218-080113.411000 --seatbelt-client=220
  504 63545     1   0 12:46PM ??         0:00.29 /System/Library/PrivateFrameworks/IMTransferServices.framework/IMTransferAgent.app/Contents/MacOS/IMTransferAgent
  504 67972     1   0 12:51PM ??         0:00.42 /usr/libexec/tipsd
  504 68822     1   0  1:02PM ??         0:00.03 /Library/Apple/System/Library/CoreServices/XProtect.app/Contents/MacOS/XProtect
  504 69005     1   0  1:05PM ??         0:00.01 /Applications/Microsoft Remote Desktop.app/Contents/Frameworks/ClientShared.framework/Versions/A/XPCServices/pasteboard.xpc.xpc/Contents/MacOS/pasteboard.xpc
  504 69368 27210   0  1:10PM ??         0:03.03 /Applications/Google Chrome.app/Contents/Frameworks/Google Chrome Framework.framework/Versions/120.0.6099.129/Helpers/Google Chrome Helper (Renderer).app/Contents/MacOS/Google Chrome Helper (Renderer) --type=renderer --origin-trial-disabled-features=WebGPU --lang=en-US --num-raster-threads=4 --enable-zero-copy --enable-gpu-memory-buffer-compositor-resources --enable-main-frame-before-activation --renderer-client-id=396 --time-ticks-at-unix-epoch=-1703506631900517 --launch-time-ticks=204819253729 --shared-files --field-trial-handle=1718379636,r,6742120930418319793,9150852737802887181,262144 --variations-seed-version=20231218-080113.411000 --seatbelt-client=212
  504 70416     1   0  1:21PM ??         0:00.44 /System/Library/PrivateFrameworks/MapsSync.framework/mapssyncd
  504 71065     1   0  1:41PM ??         0:00.02 /System/Library/Frameworks/Metal.framework/Versions/A/XPCServices/MTLCompilerService.xpc/Contents/MacOS/MTLCompilerService
  504 71245 39730   0  1:42PM ??         0:00.24 /Applications/RStudio.app/Contents/Frameworks/RStudio Helper.app/Contents/MacOS/RStudio Helper --type=utility --utility-sub-type=audio.mojom.AudioService --lang=en-US --service-sandbox-type=audio --message-loop-type-ui --user-data-dir=/Users/huazhou/Library/Application Support/RStudio --shared-files --field-trial-handle=1718379636,r,14609628184229713530,7014257192654722631,262144 --disable-features=SpareRendererForSitePerProcess --seatbelt-client=79
  504 71246     1   0  1:42PM ??         0:00.02 /System/Library/Frameworks/AudioToolbox.framework/XPCServices/com.apple.audio.SandboxHelper.xpc/Contents/MacOS/com.apple.audio.SandboxHelper
  504 71716     1   0  1:46PM ??         0:00.15 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Versions/A/Support/mdworker_shared -s mdworker -c MDSImporterWorker -m com.apple.mdworker.shared
  504 72052     1   0  1:49PM ??         0:00.24 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Versions/A/Support/mdworker_shared -s mdworker -c MDSImporterWorker -m com.apple.mdworker.shared
  504 72109     1   0  1:49PM ??         0:00.50 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Versions/A/Support/mdworker_shared -s mdworker -c MDSImporterWorker -m com.apple.mdworker.shared
  504 72222     1   0  1:49PM ??         0:00.21 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Versions/A/Support/mdworker_shared -s mdworker -c MDSImporterWorker -m com.apple.mdworker.shared
  504 72888     1   0  1:50PM ??         0:00.10 /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework/Versions/A/Support/mdworker_shared -s mdworker -c MDSImporterWorker -m com.apple.mdworker.shared
  504 72979 27210   0  1:50PM ??         0:00.03 /Applications/Google Chrome.app/Contents/Frameworks/Google Chrome Framework.framework/Versions/120.0.6099.129/Helpers/Google Chrome Helper (Renderer).app/Contents/MacOS/Google Chrome Helper (Renderer) --type=renderer --origin-trial-disabled-features=WebGPU --lang=en-US --num-raster-threads=4 --enable-zero-copy --enable-gpu-memory-buffer-compositor-resources --enable-main-frame-before-activation --renderer-client-id=430 --time-ticks-at-unix-epoch=-1703506631900517 --launch-time-ticks=206424304978 --shared-files --field-trial-handle=1718379636,r,6742120930418319793,9150852737802887181,262144 --variations-seed-version=20231218-080113.411000 --seatbelt-client=192
  504 73038 39747   0  1:50PM ??         0:00.00 /bin/bash /Applications/quarto/bin/quarto preview linux.qmd --to html --no-watch-inputs --no-browse
  504 73047 73038   0  1:50PM ??         0:00.75 /Applications/quarto/bin/tools/deno-aarch64-apple-darwin/deno run --unstable --no-config --cached-only --allow-read --allow-write --allow-run --allow-env --allow-net --allow-ffi --no-check --importmap=/Applications/quarto/bin/vendor/import_map.json /Applications/quarto/bin/quarto.js preview linux.qmd --to html --no-watch-inputs --no-browse
  504 73048 73047   0  1:50PM ??         0:00.41 /Library/Frameworks/R.framework/Resources/bin/exec/R --no-echo --no-restore --file=/Applications/quarto/share/rmd/rmd.R
  504 73170 73048   0  1:50PM ??         0:00.00 sh -c 'bash'  -c 'ps -fu $USER' 2>&1
    0 73171 73170   0  1:50PM ??         0:00.00 ps -fu huazhou
    0 38078 27225   0 11:08AM ttys000    0:00.01 login -pf huazhou
  504 38079 38078   0 11:08AM ttys000    0:00.05 -zsh
  504 41784 38079   0 11:23AM ttys000    0:00.08 ssh huazhou@hoffman2.idre.ucla.edu
  504 71201 39747   0  1:42PM ttys001    0:00.02 bash --rcfile /Applications/RStudio.app/Contents/Resources/app/resources/terminal/bash/.bash_profile

8.3 Kill processes

  • Kill process with PID=1001:
```{bash}
#| eval: false
kill 1001
```
  • Kill all R processes.
```{bash}
#| eval: false
killall -r R
```

8.4 top

  • top prints realtime process information (very useful).
```{bash}
#| eval: false
top
```

  • Exit the top program by pressing the q key.

9 Secure shell (SSH)

9.1 SSH

SSH (secure shell) is the dominant cryptographic network protocol for secure network connection via an insecure network.

  • On Linux or Mac Terminal, access a Linux machine by
```{bash}
#| eval: false
ssh [USERNAME]@[IP_ADDRESS]
```

Replace above [USERNAME] by your account user name on the Linux machine and [IP_ADDRESS] by the machine’s ip address. For example, to connect to the Hoffman2 cluster at UCLA

```{bash}
#| eval: false
ssh huazhou@hoffman2.idre.ucla.edu
```
  • For Windows users, there are at least three ways: (1) (recommended) Git Bash which is included in Git for Windows, (2) (not recommended) PuTTY program (free), or (3) (highly recommended) use WSL for Windows to install a full fledged Linux system within Windows.

9.2 Advantages of keys over password

  • Key authentication is more secure than password. Most passwords are weak.

  • Script or a program may need to systematically SSH into other machines.

  • Log into multiple machines using the same key.

  • Seamless use of many services: Git/GitHub, AWS or Google cloud service, parallel computing on multiple hosts, Travis CI (continuous integration) etc.

  • Many servers only allow key authentication and do not accept password authentication.

9.3 Key authentication

  • Public key. Put on the machine(s) you want to log in.

  • Private key. Put on your own computer. Consider this as the actual key in your pocket; never give private keys to others.

  • Messages from server to your computer is encrypted with your public key. It can only be decrypted using your private key.

  • Messages from your computer to server is signed with your private key (digital signatures) and can be verified by anyone who has your public key (authentication).

9.4 Steps to generate keys

  • On Linux, Mac, or Windows Git Bash, to generate a key pair:
ssh-keygen -t rsa -f ~/.ssh/[KEY_FILENAME] -C [USERNAME]
    • [KEY_FILENAME] is the name that you want to use for your SSH key files. For example, a filename of id_rsa generates a private key file named id_rsa and a public key file named id_rsa.pub.

    • [USERNAME] is the user for whom you will apply this SSH key.

    • Use a (optional) paraphrase different from password.

  • Set correct permissions on the .ssh folder and key files.
    • The permission for the ~/.ssh folder should be 700 (drwx------).
    • The permission of the private key ~/.ssh/id_rsa should be 600 (-rw-------).
    • The permission of the public key ~/.ssh/id_rsa.pub should be 644 (-rw-r--r--).
chmod 700 ~/.ssh
chmod 600 ~/.ssh/[KEY_FILENAME]
chmod 644 ~/.ssh/[KEY_FILENAME].pub
Note Windows is different, it doesn't allow change of permissions.
  • Append the public key to the ~/.ssh/authorized_keys file of any Linux machine we want to SSH to, e.g.,
ssh-copy-id -i ~/.ssh/[KEY_FILENAME] [USERNAME]@[IP_ADDRESS]

Make sure the permission of the authorized_keys file is 600 (-rw-------).

  • Test your new key.
ssh -i ~/.ssh/[KEY_FILENAME] [USERNAME]@[IP_ADDRESS]
  • From now on, you don’t need password each time you connect from your machine to the teaching server.

  • If you set paraphrase when generating keys, you’ll be prompted for the paraphrase each time the private key is used. Avoid repeatedly entering the paraphrase by using ssh-agent on Linux/Mac or Pagent on Windows.

  • Same key pair can be used between any two machines. We don’t need to regenerate keys for each new connection.

9.5 Transfer files between machines

  • scp securely transfers files between machines using SSH.
## copy file from local to remote
scp [LOCALFILE] [USERNAME]@[IP_ADDRESS]:/[PATH_TO_FOLDER]
## copy file from remote to local
scp [USERNAME]@[IP_ADDRESS]:/[PATH_TO_FILE] [PATH_TO_LOCAL_FOLDER]
  • sftp is FTP via SSH.

  • Globus is GUI program for securely transferring files between machines. To use Globus you will have to go to https://www.globus.org/ and login through UCLA by selecting your existing organizational login as UCLA. Then you will need to download their Globus Connect Personal software, then set your laptop as an endpoint. Very detailed instructions can be found at https://www.hoffman2.idre.ucla.edu/file-transfer/globus/.

  • GUIs for Windows (WinSCP) or Mac (Cyberduck).

  • You can even use RStudio to upload files to a remote machine with RStudio Server installed.

  • (Preferred way) Use a version control system (git, svn, cvs, …) to sync project files between different machines and systems.

9.6 Line breaks in text files

  • Windows uses a pair of CR and LF for line breaks.

  • Linux/Unix uses an LF character only.

  • MacOS X also uses a single LF character. But old Mac OS used a single CR character for line breaks.

  • If transferred in binary mode (bit by bit) between OSs, a text file could look a mess.

  • Most transfer programs automatically switch to text mode when transferring text files and perform conversion of line breaks between different OSs; but I used to run into problems using WinSCP. Sometimes you have to tell WinSCP explicitly a text file is being transferred.

10 Run R in Linux

10.1 Interactive mode

  • Start R in the interactive mode by typing R in shell.

  • Then run R script by

source("script.R")

10.2 Batch mode

  • Demo script meanEst.R implements an (terrible) estimator of mean \[ {\widehat \mu}_n = \frac{\sum_{i=1}^n x_i 1_{i \text{ is prime}}}{\sum_{i=1}^n 1_{i \text{ is prime}}}. \]
cat meanEst.R
## check if a given integer is prime
isPrime = function(n) {
  if (n <= 3) {
    return (TRUE)
  }
  if (any((n %% 2:floor(sqrt(n))) == 0)) {
    return (FALSE)
  }
  return (TRUE)
}

## estimate mean only using observation with prime indices
estMeanPrimes = function (x) {
  n = length(x)
  ind = sapply(1:n, isPrime)
  return (mean(x[ind]))
}

print(estMeanPrimes(rnorm(100000)))
  • To run your R code non-interactively aka in batch mode, we have at least two options:
#! eval: false
# default output to meanEst.Rout
R CMD BATCH meanEst.R

or

# output to stdout
Rscript meanEst.R
  • Typically automate batch calls using a scripting language, e.g., Python, Perl, and shell script.

10.3 Pass arguments to R scripts

  • Specify arguments in R CMD BATCH:
R CMD BATCH '--args mu=1 sig=2 kap=3' script.R
  • Specify arguments in Rscript:
Rscript script.R mu=1 sig=2 kap=3
  • Parse command line arguments using magic formula
for (arg in commandArgs(TRUE)) {
  eval(parse(text=arg))
}

in R script. After calling the above code, all command line arguments will be available in the global namespace.

  • To understand the magic formula commandArgs, run R by:
R '--args mu=1 sig=2 kap=3'

and then issue commands in R

commandArgs()
commandArgs(TRUE)
  • Understand the magic formula parse and eval:
rm(list = ls())
print(x)
parse(text = "x=3")
eval(parse(text = "x=3"))
print(x)
  • runSim.R has components: (1) command argument parser, (2) method implementation, (3) data generator with unspecified parameter n, and (4) estimation based on generated data.
## parsing command arguments
for (arg in commandArgs(TRUE)) {
  eval(parse(text=arg))
}

## check if a given integer is prime
isPrime = function(n) {
  if (n <= 3) {
    return (TRUE)
  }
  if (any((n %% 2:floor(sqrt(n))) == 0)) {
    return (FALSE)
  }
  return (TRUE)
}

## estimate mean only using observation with prime indices
estMeanPrimes = function (x) {
  n = length(x)
  ind = sapply(1:n, isPrime)
  return (mean(x[ind]))
}

# simulate data
x = rnorm(n)

# estimate mean
estMeanPrimes(x)
  • Call runSim.R with sample size n=100:
R CMD BATCH '--args n=100' runSim.R

or

Rscript runSim.R n=100
[1] 0.3350033

10.4 Run long jobs

  • Many statistical computing tasks take long: simulation, MCMC, etc. If we exit Linux when the job is unfinished, the job is killed.

  • nohup command in Linux runs program(s) immune to hangups and writes output to nohup.out by default. Logging out will not kill the process; we can log in later to check status and results.

  • nohup is POSIX standard thus available on Linux and MacOS.

  • Run runSim.R in background and writes output to nohup.out:

nohup Rscript runSim.R n=100 &
[1] -0.2645483

The & at the end of the command instructs Linux to run this command in background, so we gain control of the terminal immediately.

10.5 screen

  • screen is another popular utility, but not installed by default.

  • Typical workflow using screen.

    1. Access remote server using ssh.

    2. Start jobs in batch mode.

    3. Detach jobs.

    4. Exit from server, wait for jobs to finish.

    5. Access remote server using ssh.

    6. Re-attach jobs, check on progress, get results, etc.

10.6 Use R to call R

R in conjunction with nohup (or screen) can be used to orchestrate a large simulation study.

  • It can be more elegant, transparent, and robust to parallelize jobs corresponding to different scenarios (e.g., different generative models) outside of the code used to do statistical computation.

  • We consider a simulation study in R but the same approach could be used with code written in Julia, Matlab, Python, etc.

  • Python in many ways makes a better glue.

  • Suppose we have

    • runSim.R which runs a simulation based on command line argument n.
    • A large collection of n values that we want to use in our simulation study.
    • Access to a server with 128 cores.
      How to parallelize the job?
  • Option 1: manually call runSim.R for each setting.

  • Option 2 (smarter): automate calls using R and nohup.

  • Let’s demonstrate using the script autoSim.R

cat autoSim.R
# autoSim.R

nVals <- seq(100, 1000, by=100)
for (n in nVals) {
  oFile <- paste("n", n, ".txt", sep="")
  sysCall <- paste("nohup Rscript runSim.R n=", n, " > ", oFile, sep="")
  system(sysCall, wait = FALSE)
  print(paste("sysCall=", sysCall, sep=""))
}

Note when we call bash command using the system function in R, we set optional argument wait=FALSE so that jobs can be run parallel.

Rscript autoSim.R
[1] "sysCall=nohup Rscript runSim.R n=100 > n100.txt"
[1] "sysCall=nohup Rscript runSim.R n=200 > n200.txt"
[1] "sysCall=nohup Rscript runSim.R n=300 > n300.txt"
[1] "sysCall=nohup Rscript runSim.R n=400 > n400.txt"
[1] "sysCall=nohup Rscript runSim.R n=500 > n500.txt"
[1] "sysCall=nohup Rscript runSim.R n=600 > n600.txt"
[1] "sysCall=nohup Rscript runSim.R n=700 > n700.txt"
[1] "sysCall=nohup Rscript runSim.R n=800 > n800.txt"
[1] "sysCall=nohup Rscript runSim.R n=900 > n900.txt"
[1] "sysCall=nohup Rscript runSim.R n=1000 > n1000.txt"
  • Now we just need to write a script to collect results from the output files.

  • Later we will learn how to coordinate large scale computation on UCLA Hoffman2 cluster, using Linux and R scripting.

11 Some other Linux commands

  • Log out Linux: exit or logout or ctrl+d.

  • Clear screen: clear.